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Finding the Fourth Proportional to 648,049.60, 972,074.40 and 545,406.40

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Solution

The fourth proportional to 648,049.60, 972,074.40 and 545,406.40 is: 818,109.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,049.60 : 972,074.40 = 545,406.40 : x
  2. Step 2: Convert to fraction form
    648,049.60/972,074.40 = 545,406.40/x
  3. Step 3: Cross multiply
    648,049.60x = 972,074.40 × 545,406.40
  4. Step 4: Simplify right side
    648,049.60x = 530,175,599,036.16
  5. Step 5: Solve for x
    x = 530,175,599,036.16/648,049.60
  6. Step 6: Final answer
    x = 818,109.60

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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.