Home / 687,054.65-948,141.09-381,151.05

Finding the Fourth Proportional to 687,054.65, 948,141.09 and 381,151.05

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Solution

The fourth proportional to 687,054.65, 948,141.09 and 381,151.05 is: 525,991.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,054.65 : 948,141.09 = 381,151.05 : x
  2. Step 2: Convert to fraction form
    687,054.65/948,141.09 = 381,151.05/x
  3. Step 3: Cross multiply
    687,054.65x = 948,141.09 × 381,151.05
  4. Step 4: Simplify right side
    687,054.65x = 361,384,972,001.65
  5. Step 5: Solve for x
    x = 361,384,972,001.65/687,054.65
  6. Step 6: Final answer
    x = 525,991.60

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1.5x scale

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.