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Finding the Fourth Proportional to 970,128.56, 1,338,599.76 and 540,398

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Solution

The fourth proportional to 970,128.56, 1,338,599.76 and 540,398 is: 745,650.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    970,128.56 : 1,338,599.76 = 540,398 : x
  2. Step 2: Convert to fraction form
    970,128.56/1,338,599.76 = 540,398/x
  3. Step 3: Cross multiply
    970,128.56x = 1,338,599.76 × 540,398
  4. Step 4: Simplify right side
    970,128.56x = 723,376,633,104.48
  5. Step 5: Solve for x
    x = 723,376,633,104.48/970,128.56
  6. Step 6: Final answer
    x = 745,650.28

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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.