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Finding the Fourth Proportional to 659,685.60, 989,528.40 and 502,221.60

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Solution

The fourth proportional to 659,685.60, 989,528.40 and 502,221.60 is: 753,332.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,685.60 : 989,528.40 = 502,221.60 : x
  2. Step 2: Convert to fraction form
    659,685.60/989,528.40 = 502,221.60/x
  3. Step 3: Cross multiply
    659,685.60x = 989,528.40 × 502,221.60
  4. Step 4: Simplify right side
    659,685.60x = 496,962,536,293.44
  5. Step 5: Solve for x
    x = 496,962,536,293.44/659,685.60
  6. Step 6: Final answer
    x = 753,332.40

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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.