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Finding the Fourth Proportional to 664,079.64, 916,425.68 and 377,599.72

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Solution

The fourth proportional to 664,079.64, 916,425.68 and 377,599.72 is: 521,085.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,079.64 : 916,425.68 = 377,599.72 : x
  2. Step 2: Convert to fraction form
    664,079.64/916,425.68 = 377,599.72/x
  3. Step 3: Cross multiply
    664,079.64x = 916,425.68 × 377,599.72
  4. Step 4: Simplify right side
    664,079.64x = 346,042,080,168.81
  5. Step 5: Solve for x
    x = 346,042,080,168.81/664,079.64
  6. Step 6: Final answer
    x = 521,085.21

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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.