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Finding the Fourth Proportional to 704,241, 971,902.80 and 398,320.20

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Solution

The fourth proportional to 704,241, 971,902.80 and 398,320.20 is: 549,710.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,241 : 971,902.80 = 398,320.20 : x
  2. Step 2: Convert to fraction form
    704,241/971,902.80 = 398,320.20/x
  3. Step 3: Cross multiply
    704,241x = 971,902.80 × 398,320.20
  4. Step 4: Simplify right side
    704,241x = 387,128,517,676.56
  5. Step 5: Solve for x
    x = 387,128,517,676.56/704,241
  6. Step 6: Final answer
    x = 549,710.28

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1.5x scale

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.