Home / 712,921.84-1,069,382.76-239,607.20

Finding the Fourth Proportional to 712,921.84, 1,069,382.76 and 239,607.20

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Solution

The fourth proportional to 712,921.84, 1,069,382.76 and 239,607.20 is: 359,410.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,921.84 : 1,069,382.76 = 239,607.20 : x
  2. Step 2: Convert to fraction form
    712,921.84/1,069,382.76 = 239,607.20/x
  3. Step 3: Cross multiply
    712,921.84x = 1,069,382.76 × 239,607.20
  4. Step 4: Simplify right side
    712,921.84x = 256,231,808,851.87
  5. Step 5: Solve for x
    x = 256,231,808,851.87/712,921.84
  6. Step 6: Final answer
    x = 359,410.80

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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.