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Finding the Fourth Proportional to 634,142.40, 875,116.24 and 347,656.32

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Solution

The fourth proportional to 634,142.40, 875,116.24 and 347,656.32 is: 479,765.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,142.40 : 875,116.24 = 347,656.32 : x
  2. Step 2: Convert to fraction form
    634,142.40/875,116.24 = 347,656.32/x
  3. Step 3: Cross multiply
    634,142.40x = 875,116.24 × 347,656.32
  4. Step 4: Simplify right side
    634,142.40x = 304,239,691,570.64
  5. Step 5: Solve for x
    x = 304,239,691,570.64/634,142.40
  6. Step 6: Final answer
    x = 479,765.57

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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.