Home / 752,176.40-1,128,430.71-278,861.77

Finding the Fourth Proportional to 752,176.40, 1,128,430.71 and 278,861.77

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Solution

The fourth proportional to 752,176.40, 1,128,430.71 and 278,861.77 is: 418,354.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    752,176.40 : 1,128,430.71 = 278,861.77 : x
  2. Step 2: Convert to fraction form
    752,176.40/1,128,430.71 = 278,861.77/x
  3. Step 3: Cross multiply
    752,176.40x = 1,128,430.71 × 278,861.77
  4. Step 4: Simplify right side
    752,176.40x = 314,676,186,523.50
  5. Step 5: Solve for x
    x = 314,676,186,523.50/752,176.40
  6. Step 6: Final answer
    x = 418,354.24

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1.5x scale

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.