Home / 1,221,376.38-1,685,701.54-677,687.32

Finding the Fourth Proportional to 1,221,376.38, 1,685,701.54 and 677,687.32

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Solution

The fourth proportional to 1,221,376.38, 1,685,701.54 and 677,687.32 is: 935,320.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,376.38 : 1,685,701.54 = 677,687.32 : x
  2. Step 2: Convert to fraction form
    1,221,376.38/1,685,701.54 = 677,687.32/x
  3. Step 3: Cross multiply
    1,221,376.38x = 1,685,701.54 × 677,687.32
  4. Step 4: Simplify right side
    1,221,376.38x = 1,142,378,558,962.47
  5. Step 5: Solve for x
    x = 1,142,378,558,962.47/1,221,376.38
  6. Step 6: Final answer
    x = 935,320.66

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Double scale
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1.5x scale

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.