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Finding the Fourth Proportional to 707,327.13, 976,111.57 and 385,039.65

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Solution

The fourth proportional to 707,327.13, 976,111.57 and 385,039.65 is: 531,354.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,327.13 : 976,111.57 = 385,039.65 : x
  2. Step 2: Convert to fraction form
    707,327.13/976,111.57 = 385,039.65/x
  3. Step 3: Cross multiply
    707,327.13x = 976,111.57 × 385,039.65
  4. Step 4: Simplify right side
    707,327.13x = 375,841,661,415.47
  5. Step 5: Solve for x
    x = 375,841,661,415.47/707,327.13
  6. Step 6: Final answer
    x = 531,354.79

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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.