Home / 805,557.20-1,209,269.40-432,309.20

Finding the Fourth Proportional to 805,557.20, 1,209,269.40 and 432,309.20

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Solution

The fourth proportional to 805,557.20, 1,209,269.40 and 432,309.20 is: 648,964.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,557.20 : 1,209,269.40 = 432,309.20 : x
  2. Step 2: Convert to fraction form
    805,557.20/1,209,269.40 = 432,309.20/x
  3. Step 3: Cross multiply
    805,557.20x = 1,209,269.40 × 432,309.20
  4. Step 4: Simplify right side
    805,557.20x = 522,778,286,898.48
  5. Step 5: Solve for x
    x = 522,778,286,898.48/805,557.20
  6. Step 6: Final answer
    x = 648,964.82

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1.5x scale

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.