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Finding the Fourth Proportional to 906,543, 1,251,056.88 and 498,623.76

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Solution

The fourth proportional to 906,543, 1,251,056.88 and 498,623.76 is: 688,115.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,543 : 1,251,056.88 = 498,623.76 : x
  2. Step 2: Convert to fraction form
    906,543/1,251,056.88 = 498,623.76/x
  3. Step 3: Cross multiply
    906,543x = 1,251,056.88 × 498,623.76
  4. Step 4: Simplify right side
    906,543x = 623,806,685,479.47
  5. Step 5: Solve for x
    x = 623,806,685,479.47/906,543
  6. Step 6: Final answer
    x = 688,115.94

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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.