Home / 726,945.60-1,090,637.10-390,147.60

Finding the Fourth Proportional to 726,945.60, 1,090,637.10 and 390,147.60

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Solution

The fourth proportional to 726,945.60, 1,090,637.10 and 390,147.60 is: 585,338.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,945.60 : 1,090,637.10 = 390,147.60 : x
  2. Step 2: Convert to fraction form
    726,945.60/1,090,637.10 = 390,147.60/x
  3. Step 3: Cross multiply
    726,945.60x = 1,090,637.10 × 390,147.60
  4. Step 4: Simplify right side
    726,945.60x = 425,509,447,035.96
  5. Step 5: Solve for x
    x = 425,509,447,035.96/726,945.60
  6. Step 6: Final answer
    x = 585,338.78

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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.