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Finding the Fourth Proportional to 877,390, 1,210,799.82 and 474,982

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Solution

The fourth proportional to 877,390, 1,210,799.82 and 474,982 is: 655,476.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,390 : 1,210,799.82 = 474,982 : x
  2. Step 2: Convert to fraction form
    877,390/1,210,799.82 = 474,982/x
  3. Step 3: Cross multiply
    877,390x = 1,210,799.82 × 474,982
  4. Step 4: Simplify right side
    877,390x = 575,108,120,103.24
  5. Step 5: Solve for x
    x = 575,108,120,103.24/877,390
  6. Step 6: Final answer
    x = 655,476.04

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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.