Home / 712,440.28-983,160.19-385,747.66

Finding the Fourth Proportional to 712,440.28, 983,160.19 and 385,747.66

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Solution

The fourth proportional to 712,440.28, 983,160.19 and 385,747.66 is: 532,327.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,440.28 : 983,160.19 = 385,747.66 : x
  2. Step 2: Convert to fraction form
    712,440.28/983,160.19 = 385,747.66/x
  3. Step 3: Cross multiply
    712,440.28x = 983,160.19 × 385,747.66
  4. Step 4: Simplify right side
    712,440.28x = 379,251,742,697.66
  5. Step 5: Solve for x
    x = 379,251,742,697.66/712,440.28
  6. Step 6: Final answer
    x = 532,327.77

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Double scale
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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.