Home / 1,225,180.47-1,690,501.28-715,784.43

Finding the Fourth Proportional to 1,225,180.47, 1,690,501.28 and 715,784.43

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Solution

The fourth proportional to 1,225,180.47, 1,690,501.28 and 715,784.43 is: 987,637.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,180.47 : 1,690,501.28 = 715,784.43 : x
  2. Step 2: Convert to fraction form
    1,225,180.47/1,690,501.28 = 715,784.43/x
  3. Step 3: Cross multiply
    1,225,180.47x = 1,690,501.28 × 715,784.43
  4. Step 4: Simplify right side
    1,225,180.47x = 1,210,034,496,908.53
  5. Step 5: Solve for x
    x = 1,210,034,496,908.53/1,225,180.47
  6. Step 6: Final answer
    x = 987,637.76

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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.