Home / 1,399,715.48-1,931,668.82-787,907.72

Finding the Fourth Proportional to 1,399,715.48, 1,931,668.82 and 787,907.72

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Solution

The fourth proportional to 1,399,715.48, 1,931,668.82 and 787,907.72 is: 1,087,347.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,715.48 : 1,931,668.82 = 787,907.72 : x
  2. Step 2: Convert to fraction form
    1,399,715.48/1,931,668.82 = 787,907.72/x
  3. Step 3: Cross multiply
    1,399,715.48x = 1,931,668.82 × 787,907.72
  4. Step 4: Simplify right side
    1,399,715.48x = 1,521,976,775,761.29
  5. Step 5: Solve for x
    x = 1,521,976,775,761.29/1,399,715.48
  6. Step 6: Final answer
    x = 1,087,347.25

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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.