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Finding the Fourth Proportional to 570,294.68, 787,089.76 and 328,530.74

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Solution

The fourth proportional to 570,294.68, 787,089.76 and 328,530.74 is: 453,420.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,294.68 : 787,089.76 = 328,530.74 : x
  2. Step 2: Convert to fraction form
    570,294.68/787,089.76 = 328,530.74/x
  3. Step 3: Cross multiply
    570,294.68x = 787,089.76 × 328,530.74
  4. Step 4: Simplify right side
    570,294.68x = 258,583,176,542.45
  5. Step 5: Solve for x
    x = 258,583,176,542.45/570,294.68
  6. Step 6: Final answer
    x = 453,420.29

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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.