Home / 866,878,400.75-1,300,320,123.39-368,760,578.28

Finding the Fourth Proportional to 866,878,400.75, 1,300,320,123.39 and 368,760,578.28

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Solution

The fourth proportional to 866,878,400.75, 1,300,320,123.39 and 368,760,578.28 is: 553,141,940.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,878,400.75 : 1,300,320,123.39 = 368,760,578.28 : x
  2. Step 2: Convert to fraction form
    866,878,400.75/1,300,320,123.39 = 368,760,578.28/x
  3. Step 3: Cross multiply
    866,878,400.75x = 1,300,320,123.39 × 368,760,578.28
  4. Step 4: Simplify right side
    866,878,400.75x = 479,506,800,650,288,768
  5. Step 5: Solve for x
    x = 479,506,800,650,288,768/866,878,400.75
  6. Step 6: Final answer
    x = 553,141,940.36

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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.