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Finding the Fourth Proportional to 629,717.07, 869,009.80 and 357,785.32

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Solution

The fourth proportional to 629,717.07, 869,009.80 and 357,785.32 is: 493,743.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,717.07 : 869,009.80 = 357,785.32 : x
  2. Step 2: Convert to fraction form
    629,717.07/869,009.80 = 357,785.32/x
  3. Step 3: Cross multiply
    629,717.07x = 869,009.80 × 357,785.32
  4. Step 4: Simplify right side
    629,717.07x = 310,918,949,376.14
  5. Step 5: Solve for x
    x = 310,918,949,376.14/629,717.07
  6. Step 6: Final answer
    x = 493,743.88

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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.