Home / 687,885.35-1,031,476.68-404,130.20

Finding the Fourth Proportional to 687,885.35, 1,031,476.68 and 404,130.20

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Solution

The fourth proportional to 687,885.35, 1,031,476.68 and 404,130.20 is: 605,988.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,885.35 : 1,031,476.68 = 404,130.20 : x
  2. Step 2: Convert to fraction form
    687,885.35/1,031,476.68 = 404,130.20/x
  3. Step 3: Cross multiply
    687,885.35x = 1,031,476.68 × 404,130.20
  4. Step 4: Simplify right side
    687,885.35x = 416,850,871,826.35
  5. Step 5: Solve for x
    x = 416,850,871,826.35/687,885.35
  6. Step 6: Final answer
    x = 605,988.88

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1.5x scale

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.