Home / 708,623.40-1,062,999.90-287,812.20

Finding the Fourth Proportional to 708,623.40, 1,062,999.90 and 287,812.20

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Solution

The fourth proportional to 708,623.40, 1,062,999.90 and 287,812.20 is: 431,744.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,623.40 : 1,062,999.90 = 287,812.20 : x
  2. Step 2: Convert to fraction form
    708,623.40/1,062,999.90 = 287,812.20/x
  3. Step 3: Cross multiply
    708,623.40x = 1,062,999.90 × 287,812.20
  4. Step 4: Simplify right side
    708,623.40x = 305,944,339,818.78
  5. Step 5: Solve for x
    x = 305,944,339,818.78/708,623.40
  6. Step 6: Final answer
    x = 431,744.62

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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.