Home / 1,120,117.69-1,545,879.05-690,386.77

Finding the Fourth Proportional to 1,120,117.69, 1,545,879.05 and 690,386.77

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Solution

The fourth proportional to 1,120,117.69, 1,545,879.05 and 690,386.77 is: 952,805.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,117.69 : 1,545,879.05 = 690,386.77 : x
  2. Step 2: Convert to fraction form
    1,120,117.69/1,545,879.05 = 690,386.77/x
  3. Step 3: Cross multiply
    1,120,117.69x = 1,545,879.05 × 690,386.77
  4. Step 4: Simplify right side
    1,120,117.69x = 1,067,254,442,001.44
  5. Step 5: Solve for x
    x = 1,067,254,442,001.44/1,120,117.69
  6. Step 6: Final answer
    x = 952,805.63

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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.