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Finding the Fourth Proportional to 475,686.12, 712,129.50 and 317,522.28

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Solution

The fourth proportional to 475,686.12, 712,129.50 and 317,522.28 is: 475,349.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,686.12 : 712,129.50 = 317,522.28 : x
  2. Step 2: Convert to fraction form
    475,686.12/712,129.50 = 317,522.28/x
  3. Step 3: Cross multiply
    475,686.12x = 712,129.50 × 317,522.28
  4. Step 4: Simplify right side
    475,686.12x = 226,116,980,266.99
  5. Step 5: Solve for x
    x = 226,116,980,266.99/475,686.12
  6. Step 6: Final answer
    x = 475,349.13

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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.