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Finding the Fourth Proportional to 604,127.40, 908,159.40 and 427,855.20

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Solution

The fourth proportional to 604,127.40, 908,159.40 and 427,855.20 is: 643,176.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,127.40 : 908,159.40 = 427,855.20 : x
  2. Step 2: Convert to fraction form
    604,127.40/908,159.40 = 427,855.20/x
  3. Step 3: Cross multiply
    604,127.40x = 908,159.40 × 427,855.20
  4. Step 4: Simplify right side
    604,127.40x = 388,560,721,718.88
  5. Step 5: Solve for x
    x = 388,560,721,718.88/604,127.40
  6. Step 6: Final answer
    x = 643,176.79

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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.