Home / 839,422.40-1,158,403.02-457,449.20

Finding the Fourth Proportional to 839,422.40, 1,158,403.02 and 457,449.20

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Solution

The fourth proportional to 839,422.40, 1,158,403.02 and 457,449.20 is: 631,279.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,422.40 : 1,158,403.02 = 457,449.20 : x
  2. Step 2: Convert to fraction form
    839,422.40/1,158,403.02 = 457,449.20/x
  3. Step 3: Cross multiply
    839,422.40x = 1,158,403.02 × 457,449.20
  4. Step 4: Simplify right side
    839,422.40x = 529,910,534,776.58
  5. Step 5: Solve for x
    x = 529,910,534,776.58/839,422.40
  6. Step 6: Final answer
    x = 631,279.95

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Double scale
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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.