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Finding the Fourth Proportional to 704,259.91, 971,900.67 and 398,330.31

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Solution

The fourth proportional to 704,259.91, 971,900.67 and 398,330.31 is: 549,708.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,259.91 : 971,900.67 = 398,330.31 : x
  2. Step 2: Convert to fraction form
    704,259.91/971,900.67 = 398,330.31/x
  3. Step 3: Cross multiply
    704,259.91x = 971,900.67 × 398,330.31
  4. Step 4: Simplify right side
    704,259.91x = 387,137,490,310.80
  5. Step 5: Solve for x
    x = 387,137,490,310.80/704,259.91
  6. Step 6: Final answer
    x = 549,708.26

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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.