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Finding the Fourth Proportional to 645,959.32, 890,500.02 and 454,378.12

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Solution

The fourth proportional to 645,959.32, 890,500.02 and 454,378.12 is: 626,391.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,959.32 : 890,500.02 = 454,378.12 : x
  2. Step 2: Convert to fraction form
    645,959.32/890,500.02 = 454,378.12/x
  3. Step 3: Cross multiply
    645,959.32x = 890,500.02 × 454,378.12
  4. Step 4: Simplify right side
    645,959.32x = 404,623,724,947.56
  5. Step 5: Solve for x
    x = 404,623,724,947.56/645,959.32
  6. Step 6: Final answer
    x = 626,391.96

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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.