Home / 1,087,909.81-1,631,478.57-319,192.97

Finding the Fourth Proportional to 1,087,909.81, 1,631,478.57 and 319,192.97

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Solution

The fourth proportional to 1,087,909.81, 1,631,478.57 and 319,192.97 is: 478,676.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087,909.81 : 1,631,478.57 = 319,192.97 : x
  2. Step 2: Convert to fraction form
    1,087,909.81/1,631,478.57 = 319,192.97/x
  3. Step 3: Cross multiply
    1,087,909.81x = 1,631,478.57 × 319,192.97
  4. Step 4: Simplify right side
    1,087,909.81x = 520,756,490,249.65
  5. Step 5: Solve for x
    x = 520,756,490,249.65/1,087,909.81
  6. Step 6: Final answer
    x = 478,676.16

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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.