Home / 712,472.07-983,212.95-385,788.66

Finding the Fourth Proportional to 712,472.07, 983,212.95 and 385,788.66

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Solution

The fourth proportional to 712,472.07, 983,212.95 and 385,788.66 is: 532,389.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,472.07 : 983,212.95 = 385,788.66 : x
  2. Step 2: Convert to fraction form
    712,472.07/983,212.95 = 385,788.66/x
  3. Step 3: Cross multiply
    712,472.07x = 983,212.95 × 385,788.66
  4. Step 4: Simplify right side
    712,472.07x = 379,312,406,475.15
  5. Step 5: Solve for x
    x = 379,312,406,475.15/712,472.07
  6. Step 6: Final answer
    x = 532,389.16

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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.