Home / 1,101,312,145.20-1,649,977,561.80-640,873,412.40

Finding the Fourth Proportional to 1,101,312,145.20, 1,649,977,561.80 and 640,873,412.40

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Solution

The fourth proportional to 1,101,312,145.20, 1,649,977,561.80 and 640,873,412.40 is: 960,151,719.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,101,312,145.20 : 1,649,977,561.80 = 640,873,412.40 : x
  2. Step 2: Convert to fraction form
    1,101,312,145.20/1,649,977,561.80 = 640,873,412.40/x
  3. Step 3: Cross multiply
    1,101,312,145.20x = 1,649,977,561.80 × 640,873,412.40
  4. Step 4: Simplify right side
    1,101,312,145.20x = 1,057,426,750,414,197,760
  5. Step 5: Solve for x
    x = 1,057,426,750,414,197,760/1,101,312,145.20
  6. Step 6: Final answer
    x = 960,151,719.95

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Double scale
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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.