Home / 724,243.20-1,087,401.60-409,315.20

Finding the Fourth Proportional to 724,243.20, 1,087,401.60 and 409,315.20

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Solution

The fourth proportional to 724,243.20, 1,087,401.60 and 409,315.20 is: 614,558.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,243.20 : 1,087,401.60 = 409,315.20 : x
  2. Step 2: Convert to fraction form
    724,243.20/1,087,401.60 = 409,315.20/x
  3. Step 3: Cross multiply
    724,243.20x = 1,087,401.60 × 409,315.20
  4. Step 4: Simplify right side
    724,243.20x = 445,090,003,384.32
  5. Step 5: Solve for x
    x = 445,090,003,384.32/724,243.20
  6. Step 6: Final answer
    x = 614,558.76

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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.