Home / 1,129,362.80-1,558,076.20-645,668.08

Finding the Fourth Proportional to 1,129,362.80, 1,558,076.20 and 645,668.08

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Solution

The fourth proportional to 1,129,362.80, 1,558,076.20 and 645,668.08 is: 890,767.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,362.80 : 1,558,076.20 = 645,668.08 : x
  2. Step 2: Convert to fraction form
    1,129,362.80/1,558,076.20 = 645,668.08/x
  3. Step 3: Cross multiply
    1,129,362.80x = 1,558,076.20 × 645,668.08
  4. Step 4: Simplify right side
    1,129,362.80x = 1,006,000,068,547.70
  5. Step 5: Solve for x
    x = 1,006,000,068,547.70/1,129,362.80
  6. Step 6: Final answer
    x = 890,767.85

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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.