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Finding the Fourth Proportional to 577,174.40, 865,761.60 and 478,870.40

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Solution

The fourth proportional to 577,174.40, 865,761.60 and 478,870.40 is: 718,305.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,174.40 : 865,761.60 = 478,870.40 : x
  2. Step 2: Convert to fraction form
    577,174.40/865,761.60 = 478,870.40/x
  3. Step 3: Cross multiply
    577,174.40x = 865,761.60 × 478,870.40
  4. Step 4: Simplify right side
    577,174.40x = 414,587,603,696.64
  5. Step 5: Solve for x
    x = 414,587,603,696.64/577,174.40
  6. Step 6: Final answer
    x = 718,305.60

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Similar ratio
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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.