Home / 891,868.86-1,338,007.60-386,514.62

Finding the Fourth Proportional to 891,868.86, 1,338,007.60 and 386,514.62

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Solution

The fourth proportional to 891,868.86, 1,338,007.60 and 386,514.62 is: 579,860.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,868.86 : 1,338,007.60 = 386,514.62 : x
  2. Step 2: Convert to fraction form
    891,868.86/1,338,007.60 = 386,514.62/x
  3. Step 3: Cross multiply
    891,868.86x = 1,338,007.60 × 386,514.62
  4. Step 4: Simplify right side
    891,868.86x = 517,159,499,071.11
  5. Step 5: Solve for x
    x = 517,159,499,071.11/891,868.86
  6. Step 6: Final answer
    x = 579,860.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.