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Finding the Fourth Proportional to 564,720.80, 779,355.60 and 373,402.40

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Solution

The fourth proportional to 564,720.80, 779,355.60 and 373,402.40 is: 515,322.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,720.80 : 779,355.60 = 373,402.40 : x
  2. Step 2: Convert to fraction form
    564,720.80/779,355.60 = 373,402.40/x
  3. Step 3: Cross multiply
    564,720.80x = 779,355.60 × 373,402.40
  4. Step 4: Simplify right side
    564,720.80x = 291,013,251,493.44
  5. Step 5: Solve for x
    x = 291,013,251,493.44/564,720.80
  6. Step 6: Final answer
    x = 515,322.35

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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.