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Finding the Fourth Proportional to 707,434.64, 976,265.70 and 385,146.98

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Solution

The fourth proportional to 707,434.64, 976,265.70 and 385,146.98 is: 531,506.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,434.64 : 976,265.70 = 385,146.98 : x
  2. Step 2: Convert to fraction form
    707,434.64/976,265.70 = 385,146.98/x
  3. Step 3: Cross multiply
    707,434.64x = 976,265.70 × 385,146.98
  4. Step 4: Simplify right side
    707,434.64x = 376,005,786,032.59
  5. Step 5: Solve for x
    x = 376,005,786,032.59/707,434.64
  6. Step 6: Final answer
    x = 531,506.04

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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.