Home / 687,615.20-1,031,860.20-403,305.20

Finding the Fourth Proportional to 687,615.20, 1,031,860.20 and 403,305.20

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Solution

The fourth proportional to 687,615.20, 1,031,860.20 and 403,305.20 is: 605,214.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,615.20 : 1,031,860.20 = 403,305.20 : x
  2. Step 2: Convert to fraction form
    687,615.20/1,031,860.20 = 403,305.20/x
  3. Step 3: Cross multiply
    687,615.20x = 1,031,860.20 × 403,305.20
  4. Step 4: Simplify right side
    687,615.20x = 416,154,584,333.04
  5. Step 5: Solve for x
    x = 416,154,584,333.04/687,615.20
  6. Step 6: Final answer
    x = 605,214.35

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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.