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Finding the Fourth Proportional to 570,312.90, 787,207.14 and 328,757.04

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Solution

The fourth proportional to 570,312.90, 787,207.14 and 328,757.04 is: 453,785.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,312.90 : 787,207.14 = 328,757.04 : x
  2. Step 2: Convert to fraction form
    570,312.90/787,207.14 = 328,757.04/x
  3. Step 3: Cross multiply
    570,312.90x = 787,207.14 × 328,757.04
  4. Step 4: Simplify right side
    570,312.90x = 258,799,889,213.27
  5. Step 5: Solve for x
    x = 258,799,889,213.27/570,312.90
  6. Step 6: Final answer
    x = 453,785.79

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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.