Home / 1,012,128.84-1,396,184.85-649,148.76

Finding the Fourth Proportional to 1,012,128.84, 1,396,184.85 and 649,148.76

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Solution

The fourth proportional to 1,012,128.84, 1,396,184.85 and 649,148.76 is: 895,470.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,012,128.84 : 1,396,184.85 = 649,148.76 : x
  2. Step 2: Convert to fraction form
    1,012,128.84/1,396,184.85 = 649,148.76/x
  3. Step 3: Cross multiply
    1,012,128.84x = 1,396,184.85 × 649,148.76
  4. Step 4: Simplify right side
    1,012,128.84x = 906,331,664,108.29
  5. Step 5: Solve for x
    x = 906,331,664,108.29/1,012,128.84
  6. Step 6: Final answer
    x = 895,470.64

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Double scale
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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.