Home / 726,705.10-1,090,705.65-426,810.70

Finding the Fourth Proportional to 726,705.10, 1,090,705.65 and 426,810.70

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Solution

The fourth proportional to 726,705.10, 1,090,705.65 and 426,810.70 is: 640,596.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,705.10 : 1,090,705.65 = 426,810.70 : x
  2. Step 2: Convert to fraction form
    726,705.10/1,090,705.65 = 426,810.70/x
  3. Step 3: Cross multiply
    726,705.10x = 1,090,705.65 × 426,810.70
  4. Step 4: Simplify right side
    726,705.10x = 465,524,841,970.46
  5. Step 5: Solve for x
    x = 465,524,841,970.46/726,705.10
  6. Step 6: Final answer
    x = 640,596.64

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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.