Home / 684,743.10-1,027,114.65-657,186.90

Finding the Fourth Proportional to 684,743.10, 1,027,114.65 and 657,186.90

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Solution

The fourth proportional to 684,743.10, 1,027,114.65 and 657,186.90 is: 985,780.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,743.10 : 1,027,114.65 = 657,186.90 : x
  2. Step 2: Convert to fraction form
    684,743.10/1,027,114.65 = 657,186.90/x
  3. Step 3: Cross multiply
    684,743.10x = 1,027,114.65 × 657,186.90
  4. Step 4: Simplify right side
    684,743.10x = 675,006,292,778.09
  5. Step 5: Solve for x
    x = 675,006,292,778.09/684,743.10
  6. Step 6: Final answer
    x = 985,780.35

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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.