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Finding the Fourth Proportional to 558,689.01, 771,008.34 and 316,981.77

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Solution

The fourth proportional to 558,689.01, 771,008.34 and 316,981.77 is: 437,444.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,689.01 : 771,008.34 = 316,981.77 : x
  2. Step 2: Convert to fraction form
    558,689.01/771,008.34 = 316,981.77/x
  3. Step 3: Cross multiply
    558,689.01x = 771,008.34 × 316,981.77
  4. Step 4: Simplify right side
    558,689.01x = 244,395,588,297.96
  5. Step 5: Solve for x
    x = 244,395,588,297.96/558,689.01
  6. Step 6: Final answer
    x = 437,444.78

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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.