Home / 780,500.76-1,077,264.95-474,512.46

Finding the Fourth Proportional to 780,500.76, 1,077,264.95 and 474,512.46

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Solution

The fourth proportional to 780,500.76, 1,077,264.95 and 474,512.46 is: 654,932.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,500.76 : 1,077,264.95 = 474,512.46 : x
  2. Step 2: Convert to fraction form
    780,500.76/1,077,264.95 = 474,512.46/x
  3. Step 3: Cross multiply
    780,500.76x = 1,077,264.95 × 474,512.46
  4. Step 4: Simplify right side
    780,500.76x = 511,175,639,123.72
  5. Step 5: Solve for x
    x = 511,175,639,123.72/780,500.76
  6. Step 6: Final answer
    x = 654,932.92

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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.