Home / 558,689.13-771,008.40-316,981.89

Finding the Fourth Proportional to 558,689.13, 771,008.40 and 316,981.89

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Solution

The fourth proportional to 558,689.13, 771,008.40 and 316,981.89 is: 437,444.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,689.13 : 771,008.40 = 316,981.89 : x
  2. Step 2: Convert to fraction form
    558,689.13/771,008.40 = 316,981.89/x
  3. Step 3: Cross multiply
    558,689.13x = 771,008.40 × 316,981.89
  4. Step 4: Simplify right side
    558,689.13x = 244,395,699,837.88
  5. Step 5: Solve for x
    x = 244,395,699,837.88/558,689.13
  6. Step 6: Final answer
    x = 437,444.88

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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.