Home / 876,072.60-1,209,238.74-513,574.92

Finding the Fourth Proportional to 876,072.60, 1,209,238.74 and 513,574.92

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Solution

The fourth proportional to 876,072.60, 1,209,238.74 and 513,574.92 is: 708,884.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,072.60 : 1,209,238.74 = 513,574.92 : x
  2. Step 2: Convert to fraction form
    876,072.60/1,209,238.74 = 513,574.92/x
  3. Step 3: Cross multiply
    876,072.60x = 1,209,238.74 × 513,574.92
  4. Step 4: Simplify right side
    876,072.60x = 621,034,689,156.40
  5. Step 5: Solve for x
    x = 621,034,689,156.40/876,072.60
  6. Step 6: Final answer
    x = 708,884.96

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.