Home / 783,139.10-1,174,708.65-546,943.10

Finding the Fourth Proportional to 783,139.10, 1,174,708.65 and 546,943.10

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Solution

The fourth proportional to 783,139.10, 1,174,708.65 and 546,943.10 is: 820,414.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,139.10 : 1,174,708.65 = 546,943.10 : x
  2. Step 2: Convert to fraction form
    783,139.10/1,174,708.65 = 546,943.10/x
  3. Step 3: Cross multiply
    783,139.10x = 1,174,708.65 × 546,943.10
  4. Step 4: Simplify right side
    783,139.10x = 642,498,790,627.82
  5. Step 5: Solve for x
    x = 642,498,790,627.82/783,139.10
  6. Step 6: Final answer
    x = 820,414.65

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.