Home / 1,398,679,575.49-1,930,127,213.46-772,134,550.12

Finding the Fourth Proportional to 1,398,679,575.49, 1,930,127,213.46 and 772,134,550.12

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Solution

The fourth proportional to 1,398,679,575.49, 1,930,127,213.46 and 772,134,550.12 is: 1,065,517,745.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,679,575.49 : 1,930,127,213.46 = 772,134,550.12 : x
  2. Step 2: Convert to fraction form
    1,398,679,575.49/1,930,127,213.46 = 772,134,550.12/x
  3. Step 3: Cross multiply
    1,398,679,575.49x = 1,930,127,213.46 × 772,134,550.12
  4. Step 4: Simplify right side
    1,398,679,575.49x = 1,490,317,907,639,306,240
  5. Step 5: Solve for x
    x = 1,490,317,907,639,306,240/1,398,679,575.49
  6. Step 6: Final answer
    x = 1,065,517,745.28

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Double scale
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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.