Home / 712,557.20-983,329.89-385,870.78

Finding the Fourth Proportional to 712,557.20, 983,329.89 and 385,870.78

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Solution

The fourth proportional to 712,557.20, 983,329.89 and 385,870.78 is: 532,502.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,557.20 : 983,329.89 = 385,870.78 : x
  2. Step 2: Convert to fraction form
    712,557.20/983,329.89 = 385,870.78/x
  3. Step 3: Cross multiply
    712,557.20x = 983,329.89 × 385,870.78
  4. Step 4: Simplify right side
    712,557.20x = 379,438,267,136.56
  5. Step 5: Solve for x
    x = 379,438,267,136.56/712,557.20
  6. Step 6: Final answer
    x = 532,502.18

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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.