Home / 1,129,356.12-1,558,066.92-645,661.40

Finding the Fourth Proportional to 1,129,356.12, 1,558,066.92 and 645,661.40

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Solution

The fourth proportional to 1,129,356.12, 1,558,066.92 and 645,661.40 is: 890,758.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,356.12 : 1,558,066.92 = 645,661.40 : x
  2. Step 2: Convert to fraction form
    1,129,356.12/1,558,066.92 = 645,661.40/x
  3. Step 3: Cross multiply
    1,129,356.12x = 1,558,066.92 × 645,661.40
  4. Step 4: Simplify right side
    1,129,356.12x = 1,005,983,668,860.89
  5. Step 5: Solve for x
    x = 1,005,983,668,860.89/1,129,356.12
  6. Step 6: Final answer
    x = 890,758.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.