Home / 861,240.65-1,188,434.75-498,689.10

Finding the Fourth Proportional to 861,240.65, 1,188,434.75 and 498,689.10

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Solution

The fourth proportional to 861,240.65, 1,188,434.75 and 498,689.10 is: 688,146.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,240.65 : 1,188,434.75 = 498,689.10 : x
  2. Step 2: Convert to fraction form
    861,240.65/1,188,434.75 = 498,689.10/x
  3. Step 3: Cross multiply
    861,240.65x = 1,188,434.75 × 498,689.10
  4. Step 4: Simplify right side
    861,240.65x = 592,659,453,392.78
  5. Step 5: Solve for x
    x = 592,659,453,392.78/861,240.65
  6. Step 6: Final answer
    x = 688,146.17

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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.