Home / 716,118.74-988,224.12-393,828.83

Finding the Fourth Proportional to 716,118.74, 988,224.12 and 393,828.83

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Solution

The fourth proportional to 716,118.74, 988,224.12 and 393,828.83 is: 543,472.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,118.74 : 988,224.12 = 393,828.83 : x
  2. Step 2: Convert to fraction form
    716,118.74/988,224.12 = 393,828.83/x
  3. Step 3: Cross multiply
    716,118.74x = 988,224.12 × 393,828.83
  4. Step 4: Simplify right side
    716,118.74x = 389,191,148,957.38
  5. Step 5: Solve for x
    x = 389,191,148,957.38/716,118.74
  6. Step 6: Final answer
    x = 543,472.93

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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.