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Finding the Fourth Proportional to 558,487.80, 831,415.08 and 555,166.32

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Solution

The fourth proportional to 558,487.80, 831,415.08 and 555,166.32 is: 826,470.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,487.80 : 831,415.08 = 555,166.32 : x
  2. Step 2: Convert to fraction form
    558,487.80/831,415.08 = 555,166.32/x
  3. Step 3: Cross multiply
    558,487.80x = 831,415.08 × 555,166.32
  4. Step 4: Simplify right side
    558,487.80x = 461,573,650,356.11
  5. Step 5: Solve for x
    x = 461,573,650,356.11/558,487.80
  6. Step 6: Final answer
    x = 826,470.43

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.