Home / 1,278,278,501.91-1,915,722,677.40-656,468,617.06

Finding the Fourth Proportional to 1,278,278,501.91, 1,915,722,677.40 and 656,468,617.06

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Solution

The fourth proportional to 1,278,278,501.91, 1,915,722,677.40 and 656,468,617.06 is: 983,832,408.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,278,501.91 : 1,915,722,677.40 = 656,468,617.06 : x
  2. Step 2: Convert to fraction form
    1,278,278,501.91/1,915,722,677.40 = 656,468,617.06/x
  3. Step 3: Cross multiply
    1,278,278,501.91x = 1,915,722,677.40 × 656,468,617.06
  4. Step 4: Simplify right side
    1,278,278,501.91x = 1,257,611,816,703,258,368
  5. Step 5: Solve for x
    x = 1,257,611,816,703,258,368/1,278,278,501.91
  6. Step 6: Final answer
    x = 983,832,408.06

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Double scale
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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.