Home / 1,138,288.80-1,707,530.40-390,334.80

Finding the Fourth Proportional to 1,138,288.80, 1,707,530.40 and 390,334.80

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Solution

The fourth proportional to 1,138,288.80, 1,707,530.40 and 390,334.80 is: 585,535.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,288.80 : 1,707,530.40 = 390,334.80 : x
  2. Step 2: Convert to fraction form
    1,138,288.80/1,707,530.40 = 390,334.80/x
  3. Step 3: Cross multiply
    1,138,288.80x = 1,707,530.40 × 390,334.80
  4. Step 4: Simplify right side
    1,138,288.80x = 666,508,537,177.92
  5. Step 5: Solve for x
    x = 666,508,537,177.92/1,138,288.80
  6. Step 6: Final answer
    x = 585,535.53

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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.