Home / 724,342.10-999,543.62-438,020.06

Finding the Fourth Proportional to 724,342.10, 999,543.62 and 438,020.06

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Solution

The fourth proportional to 724,342.10, 999,543.62 and 438,020.06 is: 604,438.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,342.10 : 999,543.62 = 438,020.06 : x
  2. Step 2: Convert to fraction form
    724,342.10/999,543.62 = 438,020.06/x
  3. Step 3: Cross multiply
    724,342.10x = 999,543.62 × 438,020.06
  4. Step 4: Simplify right side
    724,342.10x = 437,820,156,405.02
  5. Step 5: Solve for x
    x = 437,820,156,405.02/724,342.10
  6. Step 6: Final answer
    x = 604,438.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.