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Finding the Fourth Proportional to 657,225.60, 985,838.40 and 432,839.40

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Solution

The fourth proportional to 657,225.60, 985,838.40 and 432,839.40 is: 649,259.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,225.60 : 985,838.40 = 432,839.40 : x
  2. Step 2: Convert to fraction form
    657,225.60/985,838.40 = 432,839.40/x
  3. Step 3: Cross multiply
    657,225.60x = 985,838.40 × 432,839.40
  4. Step 4: Simplify right side
    657,225.60x = 426,709,701,552.96
  5. Step 5: Solve for x
    x = 426,709,701,552.96/657,225.60
  6. Step 6: Final answer
    x = 649,259.10

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Half scale
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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.