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Finding the Fourth Proportional to 660,086.90, 910,626.86 and 430,591.32

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Solution

The fourth proportional to 660,086.90, 910,626.86 and 430,591.32 is: 594,024.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,086.90 : 910,626.86 = 430,591.32 : x
  2. Step 2: Convert to fraction form
    660,086.90/910,626.86 = 430,591.32/x
  3. Step 3: Cross multiply
    660,086.90x = 910,626.86 × 430,591.32
  4. Step 4: Simplify right side
    660,086.90x = 392,108,019,521.90
  5. Step 5: Solve for x
    x = 392,108,019,521.90/660,086.90
  6. Step 6: Final answer
    x = 594,024.85

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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.