Home / 1,288,626.21-1,778,308.32-715,666.38

Finding the Fourth Proportional to 1,288,626.21, 1,778,308.32 and 715,666.38

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Solution

The fourth proportional to 1,288,626.21, 1,778,308.32 and 715,666.38 is: 987,621.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,626.21 : 1,778,308.32 = 715,666.38 : x
  2. Step 2: Convert to fraction form
    1,288,626.21/1,778,308.32 = 715,666.38/x
  3. Step 3: Cross multiply
    1,288,626.21x = 1,778,308.32 × 715,666.38
  4. Step 4: Simplify right side
    1,288,626.21x = 1,272,675,477,898.28
  5. Step 5: Solve for x
    x = 1,272,675,477,898.28/1,288,626.21
  6. Step 6: Final answer
    x = 987,621.91

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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.