Home / 687,772.70-1,031,659.05-477,820.70

Finding the Fourth Proportional to 687,772.70, 1,031,659.05 and 477,820.70

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Solution

The fourth proportional to 687,772.70, 1,031,659.05 and 477,820.70 is: 716,731.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,772.70 : 1,031,659.05 = 477,820.70 : x
  2. Step 2: Convert to fraction form
    687,772.70/1,031,659.05 = 477,820.70/x
  3. Step 3: Cross multiply
    687,772.70x = 1,031,659.05 × 477,820.70
  4. Step 4: Simplify right side
    687,772.70x = 492,948,049,432.34
  5. Step 5: Solve for x
    x = 492,948,049,432.34/687,772.70
  6. Step 6: Final answer
    x = 716,731.05

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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.