Home / 1,126,569.18-1,554,727.73-643,289.57

Finding the Fourth Proportional to 1,126,569.18, 1,554,727.73 and 643,289.57

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Solution

The fourth proportional to 1,126,569.18, 1,554,727.73 and 643,289.57 is: 887,775.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,569.18 : 1,554,727.73 = 643,289.57 : x
  2. Step 2: Convert to fraction form
    1,126,569.18/1,554,727.73 = 643,289.57/x
  3. Step 3: Cross multiply
    1,126,569.18x = 1,554,727.73 × 643,289.57
  4. Step 4: Simplify right side
    1,126,569.18x = 1,000,140,121,908.69
  5. Step 5: Solve for x
    x = 1,000,140,121,908.69/1,126,569.18
  6. Step 6: Final answer
    x = 887,775.15

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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.