Home / 1,138,864.40-1,707,421.80-640,228.40

Finding the Fourth Proportional to 1,138,864.40, 1,707,421.80 and 640,228.40

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Solution

The fourth proportional to 1,138,864.40, 1,707,421.80 and 640,228.40 is: 959,850.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,864.40 : 1,707,421.80 = 640,228.40 : x
  2. Step 2: Convert to fraction form
    1,138,864.40/1,707,421.80 = 640,228.40/x
  3. Step 3: Cross multiply
    1,138,864.40x = 1,707,421.80 × 640,228.40
  4. Step 4: Simplify right side
    1,138,864.40x = 1,093,139,927,139.12
  5. Step 5: Solve for x
    x = 1,093,139,927,139.12/1,138,864.40
  6. Step 6: Final answer
    x = 959,850.82

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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.