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Finding the Fourth Proportional to 487,537.40, 731,306.10 and 425,329.40

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Solution

The fourth proportional to 487,537.40, 731,306.10 and 425,329.40 is: 637,994.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,537.40 : 731,306.10 = 425,329.40 : x
  2. Step 2: Convert to fraction form
    487,537.40/731,306.10 = 425,329.40/x
  3. Step 3: Cross multiply
    487,537.40x = 731,306.10 × 425,329.40
  4. Step 4: Simplify right side
    487,537.40x = 311,045,984,729.34
  5. Step 5: Solve for x
    x = 311,045,984,729.34/487,537.40
  6. Step 6: Final answer
    x = 637,994.10

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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.