Home / 724,739.18-1,087,131.54-345,701.10

Finding the Fourth Proportional to 724,739.18, 1,087,131.54 and 345,701.10

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Solution

The fourth proportional to 724,739.18, 1,087,131.54 and 345,701.10 is: 518,562.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,739.18 : 1,087,131.54 = 345,701.10 : x
  2. Step 2: Convert to fraction form
    724,739.18/1,087,131.54 = 345,701.10/x
  3. Step 3: Cross multiply
    724,739.18x = 1,087,131.54 × 345,701.10
  4. Step 4: Simplify right side
    724,739.18x = 375,822,569,222.69
  5. Step 5: Solve for x
    x = 375,822,569,222.69/724,739.18
  6. Step 6: Final answer
    x = 518,562.51

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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.