Home / 1,296,296.76-1,788,889.65-715,520.07

Finding the Fourth Proportional to 1,296,296.76, 1,788,889.65 and 715,520.07

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Solution

The fourth proportional to 1,296,296.76, 1,788,889.65 and 715,520.07 is: 987,417.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296,296.76 : 1,788,889.65 = 715,520.07 : x
  2. Step 2: Convert to fraction form
    1,296,296.76/1,788,889.65 = 715,520.07/x
  3. Step 3: Cross multiply
    1,296,296.76x = 1,788,889.65 × 715,520.07
  4. Step 4: Simplify right side
    1,296,296.76x = 1,279,986,447,590.28
  5. Step 5: Solve for x
    x = 1,279,986,447,590.28/1,296,296.76
  6. Step 6: Final answer
    x = 987,417.76

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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.