Home / 1,288,315.80-1,777,841.64-715,341.24

Finding the Fourth Proportional to 1,288,315.80, 1,777,841.64 and 715,341.24

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Solution

The fourth proportional to 1,288,315.80, 1,777,841.64 and 715,341.24 is: 987,151.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,315.80 : 1,777,841.64 = 715,341.24 : x
  2. Step 2: Convert to fraction form
    1,288,315.80/1,777,841.64 = 715,341.24/x
  3. Step 3: Cross multiply
    1,288,315.80x = 1,777,841.64 × 715,341.24
  4. Step 4: Simplify right side
    1,288,315.80x = 1,271,763,443,281.23
  5. Step 5: Solve for x
    x = 1,271,763,443,281.23/1,288,315.80
  6. Step 6: Final answer
    x = 987,151.94

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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.