Home / 1,387,892.32-1,915,041.36-776,057.20

Finding the Fourth Proportional to 1,387,892.32, 1,915,041.36 and 776,057.20

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Solution

The fourth proportional to 1,387,892.32, 1,915,041.36 and 776,057.20 is: 1,070,819.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,892.32 : 1,915,041.36 = 776,057.20 : x
  2. Step 2: Convert to fraction form
    1,387,892.32/1,915,041.36 = 776,057.20/x
  3. Step 3: Cross multiply
    1,387,892.32x = 1,915,041.36 × 776,057.20
  4. Step 4: Simplify right side
    1,387,892.32x = 1,486,181,635,725.79
  5. Step 5: Solve for x
    x = 1,486,181,635,725.79/1,387,892.32
  6. Step 6: Final answer
    x = 1,070,819.12

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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.