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Finding the Fourth Proportional to 634,767.60, 875,995.40 and 348,287.61

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Solution

The fourth proportional to 634,767.60, 875,995.40 and 348,287.61 is: 480,645.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,767.60 : 875,995.40 = 348,287.61 : x
  2. Step 2: Convert to fraction form
    634,767.60/875,995.40 = 348,287.61/x
  3. Step 3: Cross multiply
    634,767.60x = 875,995.40 × 348,287.61
  4. Step 4: Simplify right side
    634,767.60x = 305,098,342,495.56
  5. Step 5: Solve for x
    x = 305,098,342,495.56/634,767.60
  6. Step 6: Final answer
    x = 480,645.74

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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.