Home / 1,288,628.91-1,778,307.91-715,722.39

Finding the Fourth Proportional to 1,288,628.91, 1,778,307.91 and 715,722.39

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Solution

The fourth proportional to 1,288,628.91, 1,778,307.91 and 715,722.39 is: 987,696.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,628.91 : 1,778,307.91 = 715,722.39 : x
  2. Step 2: Convert to fraction form
    1,288,628.91/1,778,307.91 = 715,722.39/x
  3. Step 3: Cross multiply
    1,288,628.91x = 1,778,307.91 × 715,722.39
  4. Step 4: Simplify right side
    1,288,628.91x = 1,272,774,787,501.11
  5. Step 5: Solve for x
    x = 1,272,774,787,501.11/1,288,628.91
  6. Step 6: Final answer
    x = 987,696.91

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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.