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Finding the Fourth Proportional to 707,036.32, 975,709.84 and 389,084.32

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Solution

The fourth proportional to 707,036.32, 975,709.84 and 389,084.32 is: 536,936.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,036.32 : 975,709.84 = 389,084.32 : x
  2. Step 2: Convert to fraction form
    707,036.32/975,709.84 = 389,084.32/x
  3. Step 3: Cross multiply
    707,036.32x = 975,709.84 × 389,084.32
  4. Step 4: Simplify right side
    707,036.32x = 379,633,399,613.71
  5. Step 5: Solve for x
    x = 379,633,399,613.71/707,036.32
  6. Step 6: Final answer
    x = 536,936.21

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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.