Home / 1,129,630-1,558,889.40-620,340.88

Finding the Fourth Proportional to 1,129,630, 1,558,889.40 and 620,340.88

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Solution

The fourth proportional to 1,129,630, 1,558,889.40 and 620,340.88 is: 856,070.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,630 : 1,558,889.40 = 620,340.88 : x
  2. Step 2: Convert to fraction form
    1,129,630/1,558,889.40 = 620,340.88/x
  3. Step 3: Cross multiply
    1,129,630x = 1,558,889.40 × 620,340.88
  4. Step 4: Simplify right side
    1,129,630x = 967,042,822,218.67
  5. Step 5: Solve for x
    x = 967,042,822,218.67/1,129,630
  6. Step 6: Final answer
    x = 856,070.41

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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.