Home / 1,112,111.28-1,668,166.80-961,905.20

Finding the Fourth Proportional to 1,112,111.28, 1,668,166.80 and 961,905.20

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Solution

The fourth proportional to 1,112,111.28, 1,668,166.80 and 961,905.20 is: 1,442,857.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112,111.28 : 1,668,166.80 = 961,905.20 : x
  2. Step 2: Convert to fraction form
    1,112,111.28/1,668,166.80 = 961,905.20/x
  3. Step 3: Cross multiply
    1,112,111.28x = 1,668,166.80 × 961,905.20
  4. Step 4: Simplify right side
    1,112,111.28x = 1,604,618,319,387.36
  5. Step 5: Solve for x
    x = 1,604,618,319,387.36/1,112,111.28
  6. Step 6: Final answer
    x = 1,442,857.70

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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.