Home / 1,288,811.84-1,778,510.72-715,888.64

Finding the Fourth Proportional to 1,288,811.84, 1,778,510.72 and 715,888.64

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Solution

The fourth proportional to 1,288,811.84, 1,778,510.72 and 715,888.64 is: 987,898.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,811.84 : 1,778,510.72 = 715,888.64 : x
  2. Step 2: Convert to fraction form
    1,288,811.84/1,778,510.72 = 715,888.64/x
  3. Step 3: Cross multiply
    1,288,811.84x = 1,778,510.72 × 715,888.64
  4. Step 4: Simplify right side
    1,288,811.84x = 1,273,215,620,566.22
  5. Step 5: Solve for x
    x = 1,273,215,620,566.22/1,288,811.84
  6. Step 6: Final answer
    x = 987,898.76

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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.