Home / 1,386,569,248.92-1,912,349,846.70-1,218,947,111.40

Finding the Fourth Proportional to 1,386,569,248.92, 1,912,349,846.70 and 1,218,947,111.40

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Solution

The fourth proportional to 1,386,569,248.92, 1,912,349,846.70 and 1,218,947,111.40 is: 1,681,166,175.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,569,248.92 : 1,912,349,846.70 = 1,218,947,111.40 : x
  2. Step 2: Convert to fraction form
    1,386,569,248.92/1,912,349,846.70 = 1,218,947,111.40/x
  3. Step 3: Cross multiply
    1,386,569,248.92x = 1,912,349,846.70 × 1,218,947,111.40
  4. Step 4: Simplify right side
    1,386,569,248.92x = 2,331,053,321,621,197,824
  5. Step 5: Solve for x
    x = 2,331,053,321,621,197,824/1,386,569,248.92
  6. Step 6: Final answer
    x = 1,681,166,175.75

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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.