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Finding the Fourth Proportional to 704,007.61, 971,470.43 and 398,068.99

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Solution

The fourth proportional to 704,007.61, 971,470.43 and 398,068.99 is: 549,301.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,007.61 : 971,470.43 = 398,068.99 : x
  2. Step 2: Convert to fraction form
    704,007.61/971,470.43 = 398,068.99/x
  3. Step 3: Cross multiply
    704,007.61x = 971,470.43 × 398,068.99
  4. Step 4: Simplify right side
    704,007.61x = 386,712,249,958.70
  5. Step 5: Solve for x
    x = 386,712,249,958.70/704,007.61
  6. Step 6: Final answer
    x = 549,301.24

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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.