Home / 578,423.20-867,116.40-515,437.60

Finding the Fourth Proportional to 578,423.20, 867,116.40 and 515,437.60

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Solution

The fourth proportional to 578,423.20, 867,116.40 and 515,437.60 is: 772,694.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,423.20 : 867,116.40 = 515,437.60 : x
  2. Step 2: Convert to fraction form
    578,423.20/867,116.40 = 515,437.60/x
  3. Step 3: Cross multiply
    578,423.20x = 867,116.40 × 515,437.60
  4. Step 4: Simplify right side
    578,423.20x = 446,944,396,136.64
  5. Step 5: Solve for x
    x = 446,944,396,136.64/578,423.20
  6. Step 6: Final answer
    x = 772,694.45

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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.