Home / 872,684.56-1,204,280.76-490,701.52

Finding the Fourth Proportional to 872,684.56, 1,204,280.76 and 490,701.52

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Solution

The fourth proportional to 872,684.56, 1,204,280.76 and 490,701.52 is: 677,154.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,684.56 : 1,204,280.76 = 490,701.52 : x
  2. Step 2: Convert to fraction form
    872,684.56/1,204,280.76 = 490,701.52/x
  3. Step 3: Cross multiply
    872,684.56x = 1,204,280.76 × 490,701.52
  4. Step 4: Simplify right side
    872,684.56x = 590,942,399,438.76
  5. Step 5: Solve for x
    x = 590,942,399,438.76/872,684.56
  6. Step 6: Final answer
    x = 677,154.64

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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.