Home / 1,387,726.64-1,915,037.88-784,101.68

Finding the Fourth Proportional to 1,387,726.64, 1,915,037.88 and 784,101.68

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Solution

The fourth proportional to 1,387,726.64, 1,915,037.88 and 784,101.68 is: 1,082,046.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,726.64 : 1,915,037.88 = 784,101.68 : x
  2. Step 2: Convert to fraction form
    1,387,726.64/1,915,037.88 = 784,101.68/x
  3. Step 3: Cross multiply
    1,387,726.64x = 1,915,037.88 × 784,101.68
  4. Step 4: Simplify right side
    1,387,726.64x = 1,501,584,418,971.64
  5. Step 5: Solve for x
    x = 1,501,584,418,971.64/1,387,726.64
  6. Step 6: Final answer
    x = 1,082,046.26

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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.