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Finding the Fourth Proportional to 877,398.12, 1,316,638.62 and 344,825.64

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Solution

The fourth proportional to 877,398.12, 1,316,638.62 and 344,825.64 is: 517,451.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,398.12 : 1,316,638.62 = 344,825.64 : x
  2. Step 2: Convert to fraction form
    877,398.12/1,316,638.62 = 344,825.64/x
  3. Step 3: Cross multiply
    877,398.12x = 1,316,638.62 × 344,825.64
  4. Step 4: Simplify right side
    877,398.12x = 454,010,754,790.22
  5. Step 5: Solve for x
    x = 454,010,754,790.22/877,398.12
  6. Step 6: Final answer
    x = 517,451.25

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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.