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Finding the Fourth Proportional to 704,000.05, 971,459.99 and 398,061.43

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Solution

The fourth proportional to 704,000.05, 971,459.99 and 398,061.43 is: 549,290.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,000.05 : 971,459.99 = 398,061.43 : x
  2. Step 2: Convert to fraction form
    704,000.05/971,459.99 = 398,061.43/x
  3. Step 3: Cross multiply
    704,000.05x = 971,459.99 × 398,061.43
  4. Step 4: Simplify right side
    704,000.05x = 386,700,752,807.19
  5. Step 5: Solve for x
    x = 386,700,752,807.19/704,000.05
  6. Step 6: Final answer
    x = 549,290.80

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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.