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Finding the Fourth Proportional to 634,019.26, 875,036.08 and 392,379.64

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Solution

The fourth proportional to 634,019.26, 875,036.08 and 392,379.64 is: 541,539.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,019.26 : 875,036.08 = 392,379.64 : x
  2. Step 2: Convert to fraction form
    634,019.26/875,036.08 = 392,379.64/x
  3. Step 3: Cross multiply
    634,019.26x = 875,036.08 × 392,379.64
  4. Step 4: Simplify right side
    634,019.26x = 343,346,342,057.41
  5. Step 5: Solve for x
    x = 343,346,342,057.41/634,019.26
  6. Step 6: Final answer
    x = 541,539.29

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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.