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Finding the Fourth Proportional to 389,600.80, 584,401.20 and 373,854.40

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Solution

The fourth proportional to 389,600.80, 584,401.20 and 373,854.40 is: 560,781.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,600.80 : 584,401.20 = 373,854.40 : x
  2. Step 2: Convert to fraction form
    389,600.80/584,401.20 = 373,854.40/x
  3. Step 3: Cross multiply
    389,600.80x = 584,401.20 × 373,854.40
  4. Step 4: Simplify right side
    389,600.80x = 218,480,959,985.28
  5. Step 5: Solve for x
    x = 218,480,959,985.28/389,600.80
  6. Step 6: Final answer
    x = 560,781.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.