Home / 782,307.56-1,079,399.38-442,775.81

Finding the Fourth Proportional to 782,307.56, 1,079,399.38 and 442,775.81

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Solution

The fourth proportional to 782,307.56, 1,079,399.38 and 442,775.81 is: 610,925.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,307.56 : 1,079,399.38 = 442,775.81 : x
  2. Step 2: Convert to fraction form
    782,307.56/1,079,399.38 = 442,775.81/x
  3. Step 3: Cross multiply
    782,307.56x = 1,079,399.38 × 442,775.81
  4. Step 4: Simplify right side
    782,307.56x = 477,931,929,396.00
  5. Step 5: Solve for x
    x = 477,931,929,396.00/782,307.56
  6. Step 6: Final answer
    x = 610,925.88

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1.5x scale

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.