Home / 724,405.20-1,087,385.40-409,477.20

Finding the Fourth Proportional to 724,405.20, 1,087,385.40 and 409,477.20

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Solution

The fourth proportional to 724,405.20, 1,087,385.40 and 409,477.20 is: 614,655.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,405.20 : 1,087,385.40 = 409,477.20 : x
  2. Step 2: Convert to fraction form
    724,405.20/1,087,385.40 = 409,477.20/x
  3. Step 3: Cross multiply
    724,405.20x = 1,087,385.40 × 409,477.20
  4. Step 4: Simplify right side
    724,405.20x = 445,259,528,912.88
  5. Step 5: Solve for x
    x = 445,259,528,912.88/724,405.20
  6. Step 6: Final answer
    x = 614,655.35

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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.