Home / 1,225,180.10-1,690,500.76-715,784.06

Finding the Fourth Proportional to 1,225,180.10, 1,690,500.76 and 715,784.06

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Solution

The fourth proportional to 1,225,180.10, 1,690,500.76 and 715,784.06 is: 987,637.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,180.10 : 1,690,500.76 = 715,784.06 : x
  2. Step 2: Convert to fraction form
    1,225,180.10/1,690,500.76 = 715,784.06/x
  3. Step 3: Cross multiply
    1,225,180.10x = 1,690,500.76 × 715,784.06
  4. Step 4: Simplify right side
    1,225,180.10x = 1,210,033,488,973.38
  5. Step 5: Solve for x
    x = 1,210,033,488,973.38/1,225,180.10
  6. Step 6: Final answer
    x = 987,637.24

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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.