Home / 861,916.35-1,189,264.12-499,318.59

Finding the Fourth Proportional to 861,916.35, 1,189,264.12 and 499,318.59

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Solution

The fourth proportional to 861,916.35, 1,189,264.12 and 499,318.59 is: 688,955.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,916.35 : 1,189,264.12 = 499,318.59 : x
  2. Step 2: Convert to fraction form
    861,916.35/1,189,264.12 = 499,318.59/x
  3. Step 3: Cross multiply
    861,916.35x = 1,189,264.12 × 499,318.59
  4. Step 4: Simplify right side
    861,916.35x = 593,821,679,521.69
  5. Step 5: Solve for x
    x = 593,821,679,521.69/861,916.35
  6. Step 6: Final answer
    x = 688,955.12

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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.