Home / 781,510.96-1,078,543.17-437,381.45

Finding the Fourth Proportional to 781,510.96, 1,078,543.17 and 437,381.45

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Solution

The fourth proportional to 781,510.96, 1,078,543.17 and 437,381.45 is: 603,618.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,510.96 : 1,078,543.17 = 437,381.45 : x
  2. Step 2: Convert to fraction form
    781,510.96/1,078,543.17 = 437,381.45/x
  3. Step 3: Cross multiply
    781,510.96x = 1,078,543.17 × 437,381.45
  4. Step 4: Simplify right side
    781,510.96x = 471,734,770,189.48
  5. Step 5: Solve for x
    x = 471,734,770,189.48/781,510.96
  6. Step 6: Final answer
    x = 603,618.88

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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.