Home / 749,990.70-1,121,705.55-670,602.60

Finding the Fourth Proportional to 749,990.70, 1,121,705.55 and 670,602.60

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Solution

The fourth proportional to 749,990.70, 1,121,705.55 and 670,602.60 is: 1,002,970.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,990.70 : 1,121,705.55 = 670,602.60 : x
  2. Step 2: Convert to fraction form
    749,990.70/1,121,705.55 = 670,602.60/x
  3. Step 3: Cross multiply
    749,990.70x = 1,121,705.55 × 670,602.60
  4. Step 4: Simplify right side
    749,990.70x = 752,218,658,264.43
  5. Step 5: Solve for x
    x = 752,218,658,264.43/749,990.70
  6. Step 6: Final answer
    x = 1,002,970.65

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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.