Home / 924,139.20-1,275,312.09-521,731.20

Finding the Fourth Proportional to 924,139.20, 1,275,312.09 and 521,731.20

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Solution

The fourth proportional to 924,139.20, 1,275,312.09 and 521,731.20 is: 719,989.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    924,139.20 : 1,275,312.09 = 521,731.20 : x
  2. Step 2: Convert to fraction form
    924,139.20/1,275,312.09 = 521,731.20/x
  3. Step 3: Cross multiply
    924,139.20x = 1,275,312.09 × 521,731.20
  4. Step 4: Simplify right side
    924,139.20x = 665,370,107,090.21
  5. Step 5: Solve for x
    x = 665,370,107,090.21/924,139.20
  6. Step 6: Final answer
    x = 719,989.05

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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.