Home / 729,340.53-1,005,285.25-487,534.87

Finding the Fourth Proportional to 729,340.53, 1,005,285.25 and 487,534.87

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Solution

The fourth proportional to 729,340.53, 1,005,285.25 and 487,534.87 is: 671,992.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,340.53 : 1,005,285.25 = 487,534.87 : x
  2. Step 2: Convert to fraction form
    729,340.53/1,005,285.25 = 487,534.87/x
  3. Step 3: Cross multiply
    729,340.53x = 1,005,285.25 × 487,534.87
  4. Step 4: Simplify right side
    729,340.53x = 490,111,613,671.67
  5. Step 5: Solve for x
    x = 490,111,613,671.67/729,340.53
  6. Step 6: Final answer
    x = 671,992.84

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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.