Home / 1,225,090.69-1,690,376.17-715,694.65

Finding the Fourth Proportional to 1,225,090.69, 1,690,376.17 and 715,694.65

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Solution

The fourth proportional to 1,225,090.69, 1,690,376.17 and 715,694.65 is: 987,513.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,090.69 : 1,690,376.17 = 715,694.65 : x
  2. Step 2: Convert to fraction form
    1,225,090.69/1,690,376.17 = 715,694.65/x
  3. Step 3: Cross multiply
    1,225,090.69x = 1,690,376.17 × 715,694.65
  4. Step 4: Simplify right side
    1,225,090.69x = 1,209,793,181,356.49
  5. Step 5: Solve for x
    x = 1,209,793,181,356.49/1,225,090.69
  6. Step 6: Final answer
    x = 987,513.16

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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.