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Finding the Fourth Proportional to 570,354.88, 787,172.56 and 328,590.40

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Solution

The fourth proportional to 570,354.88, 787,172.56 and 328,590.40 is: 453,502.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,354.88 : 787,172.56 = 328,590.40 : x
  2. Step 2: Convert to fraction form
    570,354.88/787,172.56 = 328,590.40/x
  3. Step 3: Cross multiply
    570,354.88x = 787,172.56 × 328,590.40
  4. Step 4: Simplify right side
    570,354.88x = 258,657,346,359.42
  5. Step 5: Solve for x
    x = 258,657,346,359.42/570,354.88
  6. Step 6: Final answer
    x = 453,502.47

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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.