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Finding the Fourth Proportional to 570,312.12, 787,227.36 and 328,691.16

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Solution

The fourth proportional to 570,312.12, 787,227.36 and 328,691.16 is: 453,707.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,312.12 : 787,227.36 = 328,691.16 : x
  2. Step 2: Convert to fraction form
    570,312.12/787,227.36 = 328,691.16/x
  3. Step 3: Cross multiply
    570,312.12x = 787,227.36 × 328,691.16
  4. Step 4: Simplify right side
    570,312.12x = 258,754,674,142.14
  5. Step 5: Solve for x
    x = 258,754,674,142.14/570,312.12
  6. Step 6: Final answer
    x = 453,707.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.