Home / 990,475.52-1,485,155.52-316,398.40

Finding the Fourth Proportional to 990,475.52, 1,485,155.52 and 316,398.40

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Solution

The fourth proportional to 990,475.52, 1,485,155.52 and 316,398.40 is: 474,419.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,475.52 : 1,485,155.52 = 316,398.40 : x
  2. Step 2: Convert to fraction form
    990,475.52/1,485,155.52 = 316,398.40/x
  3. Step 3: Cross multiply
    990,475.52x = 1,485,155.52 × 316,398.40
  4. Step 4: Simplify right side
    990,475.52x = 469,900,830,279.17
  5. Step 5: Solve for x
    x = 469,900,830,279.17/990,475.52
  6. Step 6: Final answer
    x = 474,419.43

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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.