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Finding the Fourth Proportional to 553,277.80, 829,916.70 and 287,557.30

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Solution

The fourth proportional to 553,277.80, 829,916.70 and 287,557.30 is: 431,335.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,277.80 : 829,916.70 = 287,557.30 : x
  2. Step 2: Convert to fraction form
    553,277.80/829,916.70 = 287,557.30/x
  3. Step 3: Cross multiply
    553,277.80x = 829,916.70 × 287,557.30
  4. Step 4: Simplify right side
    553,277.80x = 238,648,605,476.91
  5. Step 5: Solve for x
    x = 238,648,605,476.91/553,277.80
  6. Step 6: Final answer
    x = 431,335.95

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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.