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Finding the Fourth Proportional to 707,871.28, 976,870.90 and 385,584.02

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Solution

The fourth proportional to 707,871.28, 976,870.90 and 385,584.02 is: 532,110.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,871.28 : 976,870.90 = 385,584.02 : x
  2. Step 2: Convert to fraction form
    707,871.28/976,870.90 = 385,584.02/x
  3. Step 3: Cross multiply
    707,871.28x = 976,870.90 × 385,584.02
  4. Step 4: Simplify right side
    707,871.28x = 376,665,808,643.02
  5. Step 5: Solve for x
    x = 376,665,808,643.02/707,871.28
  6. Step 6: Final answer
    x = 532,110.60

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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.