Home / 1,128,079.20-1,556,828.48-644,715.84

Finding the Fourth Proportional to 1,128,079.20, 1,556,828.48 and 644,715.84

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Solution

The fourth proportional to 1,128,079.20, 1,556,828.48 and 644,715.84 is: 889,753.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,079.20 : 1,556,828.48 = 644,715.84 : x
  2. Step 2: Convert to fraction form
    1,128,079.20/1,556,828.48 = 644,715.84/x
  3. Step 3: Cross multiply
    1,128,079.20x = 1,556,828.48 × 644,715.84
  4. Step 4: Simplify right side
    1,128,079.20x = 1,003,711,981,219.12
  5. Step 5: Solve for x
    x = 1,003,711,981,219.12/1,128,079.20
  6. Step 6: Final answer
    x = 889,753.11

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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.