Home / 724,443.60-1,086,859.80-646,100.40

Finding the Fourth Proportional to 724,443.60, 1,086,859.80 and 646,100.40

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Solution

The fourth proportional to 724,443.60, 1,086,859.80 and 646,100.40 is: 969,323.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,443.60 : 1,086,859.80 = 646,100.40 : x
  2. Step 2: Convert to fraction form
    724,443.60/1,086,859.80 = 646,100.40/x
  3. Step 3: Cross multiply
    724,443.60x = 1,086,859.80 × 646,100.40
  4. Step 4: Simplify right side
    724,443.60x = 702,220,551,523.92
  5. Step 5: Solve for x
    x = 702,220,551,523.92/724,443.60
  6. Step 6: Final answer
    x = 969,323.98

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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.