Home / 478,631.80-717,947.70-163,012.60

Finding the Fourth Proportional to 478,631.80, 717,947.70 and 163,012.60

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Solution

The fourth proportional to 478,631.80, 717,947.70 and 163,012.60 is: 244,518.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,631.80 : 717,947.70 = 163,012.60 : x
  2. Step 2: Convert to fraction form
    478,631.80/717,947.70 = 163,012.60/x
  3. Step 3: Cross multiply
    478,631.80x = 717,947.70 × 163,012.60
  4. Step 4: Simplify right side
    478,631.80x = 117,034,521,241.02
  5. Step 5: Solve for x
    x = 117,034,521,241.02/478,631.80
  6. Step 6: Final answer
    x = 244,518.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.