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Finding the Fourth Proportional to 707,565.12, 976,431.36 and 385,275.12

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Solution

The fourth proportional to 707,565.12, 976,431.36 and 385,275.12 is: 531,675.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,565.12 : 976,431.36 = 385,275.12 : x
  2. Step 2: Convert to fraction form
    707,565.12/976,431.36 = 385,275.12/x
  3. Step 3: Cross multiply
    707,565.12x = 976,431.36 × 385,275.12
  4. Step 4: Simplify right side
    707,565.12x = 376,194,709,395.76
  5. Step 5: Solve for x
    x = 376,194,709,395.76/707,565.12
  6. Step 6: Final answer
    x = 531,675.03

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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.