Home / 872,419.28-1,203,903.52-490,437.92

Finding the Fourth Proportional to 872,419.28, 1,203,903.52 and 490,437.92

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Solution

The fourth proportional to 872,419.28, 1,203,903.52 and 490,437.92 is: 676,784.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,419.28 : 1,203,903.52 = 490,437.92 : x
  2. Step 2: Convert to fraction form
    872,419.28/1,203,903.52 = 490,437.92/x
  3. Step 3: Cross multiply
    872,419.28x = 1,203,903.52 × 490,437.92
  4. Step 4: Simplify right side
    872,419.28x = 590,439,938,229.48
  5. Step 5: Solve for x
    x = 590,439,938,229.48/872,419.28
  6. Step 6: Final answer
    x = 676,784.61

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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.