Home / 714,124.28-985,491.06-391,836.44

Finding the Fourth Proportional to 714,124.28, 985,491.06 and 391,836.44

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Solution

The fourth proportional to 714,124.28, 985,491.06 and 391,836.44 is: 540,734.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,124.28 : 985,491.06 = 391,836.44 : x
  2. Step 2: Convert to fraction form
    714,124.28/985,491.06 = 391,836.44/x
  3. Step 3: Cross multiply
    714,124.28x = 985,491.06 × 391,836.44
  4. Step 4: Simplify right side
    714,124.28x = 386,151,308,602.23
  5. Step 5: Solve for x
    x = 386,151,308,602.23/714,124.28
  6. Step 6: Final answer
    x = 540,734.04

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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.