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Finding the Fourth Proportional to 655,060.14, 903,990.21 and 360,742.90

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Solution

The fourth proportional to 655,060.14, 903,990.21 and 360,742.90 is: 497,829.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,060.14 : 903,990.21 = 360,742.90 : x
  2. Step 2: Convert to fraction form
    655,060.14/903,990.21 = 360,742.90/x
  3. Step 3: Cross multiply
    655,060.14x = 903,990.21 × 360,742.90
  4. Step 4: Simplify right side
    655,060.14x = 326,108,049,927.01
  5. Step 5: Solve for x
    x = 326,108,049,927.01/655,060.14
  6. Step 6: Final answer
    x = 497,829.18

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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.