Home / 1,387,144.38-1,913,492.79-1,129,298.70

Finding the Fourth Proportional to 1,387,144.38, 1,913,492.79 and 1,129,298.70

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Solution

The fourth proportional to 1,387,144.38, 1,913,492.79 and 1,129,298.70 is: 1,557,808.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,144.38 : 1,913,492.79 = 1,129,298.70 : x
  2. Step 2: Convert to fraction form
    1,387,144.38/1,913,492.79 = 1,129,298.70/x
  3. Step 3: Cross multiply
    1,387,144.38x = 1,913,492.79 × 1,129,298.70
  4. Step 4: Simplify right side
    1,387,144.38x = 2,160,904,920,206.37
  5. Step 5: Solve for x
    x = 2,160,904,920,206.37/1,387,144.38
  6. Step 6: Final answer
    x = 1,557,808.22

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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.