Home / 907,860.72-1,252,851.55-520,691.10

Finding the Fourth Proportional to 907,860.72, 1,252,851.55 and 520,691.10

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Solution

The fourth proportional to 907,860.72, 1,252,851.55 and 520,691.10 is: 718,555.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,860.72 : 1,252,851.55 = 520,691.10 : x
  2. Step 2: Convert to fraction form
    907,860.72/1,252,851.55 = 520,691.10/x
  3. Step 3: Cross multiply
    907,860.72x = 1,252,851.55 × 520,691.10
  4. Step 4: Simplify right side
    907,860.72x = 652,348,655,682.46
  5. Step 5: Solve for x
    x = 652,348,655,682.46/907,860.72
  6. Step 6: Final answer
    x = 718,555.87

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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.