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Finding the Fourth Proportional to 487,598.40, 731,397.60 and 328,166.10

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Solution

The fourth proportional to 487,598.40, 731,397.60 and 328,166.10 is: 492,249.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,598.40 : 731,397.60 = 328,166.10 : x
  2. Step 2: Convert to fraction form
    487,598.40/731,397.60 = 328,166.10/x
  3. Step 3: Cross multiply
    487,598.40x = 731,397.60 × 328,166.10
  4. Step 4: Simplify right side
    487,598.40x = 240,019,897,941.36
  5. Step 5: Solve for x
    x = 240,019,897,941.36/487,598.40
  6. Step 6: Final answer
    x = 492,249.15

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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.