Home / 674,154.36-930,091.28-398,454.39

Finding the Fourth Proportional to 674,154.36, 930,091.28 and 398,454.39

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Solution

The fourth proportional to 674,154.36, 930,091.28 and 398,454.39 is: 549,724.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,154.36 : 930,091.28 = 398,454.39 : x
  2. Step 2: Convert to fraction form
    674,154.36/930,091.28 = 398,454.39/x
  3. Step 3: Cross multiply
    674,154.36x = 930,091.28 × 398,454.39
  4. Step 4: Simplify right side
    674,154.36x = 370,598,951,624.45
  5. Step 5: Solve for x
    x = 370,598,951,624.45/674,154.36
  6. Step 6: Final answer
    x = 549,724.18

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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.