Home / 890,128-1,335,359.40-357,691.24

Finding the Fourth Proportional to 890,128, 1,335,359.40 and 357,691.24

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Solution

The fourth proportional to 890,128, 1,335,359.40 and 357,691.24 is: 536,604.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,128 : 1,335,359.40 = 357,691.24 : x
  2. Step 2: Convert to fraction form
    890,128/1,335,359.40 = 357,691.24/x
  3. Step 3: Cross multiply
    890,128x = 1,335,359.40 × 357,691.24
  4. Step 4: Simplify right side
    890,128x = 477,646,359,631.66
  5. Step 5: Solve for x
    x = 477,646,359,631.66/890,128
  6. Step 6: Final answer
    x = 536,604.13

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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.