Home / 30,279,778,855.20-45,419,668,282.80-19,831,223,642.40

Finding the Fourth Proportional to 30,279,778,855.20, 45,419,668,282.80 and 19,831,223,642.40

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Solution

The fourth proportional to 30,279,778,855.20, 45,419,668,282.80 and 19,831,223,642.40 is: 29,746,835,463.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,279,778,855.20 : 45,419,668,282.80 = 19,831,223,642.40 : x
  2. Step 2: Convert to fraction form
    30,279,778,855.20/45,419,668,282.80 = 19,831,223,642.40/x
  3. Step 3: Cross multiply
    30,279,778,855.20x = 45,419,668,282.80 × 19,831,223,642.40
  4. Step 4: Simplify right side
    30,279,778,855.20x = 900,727,599,479,828,905,984
  5. Step 5: Solve for x
    x = 900,727,599,479,828,905,984/30,279,778,855.20
  6. Step 6: Final answer
    x = 29,746,835,463.60

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.