Home / 1,129,289.76-1,558,370.88-620,000.64

Finding the Fourth Proportional to 1,129,289.76, 1,558,370.88 and 620,000.64

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Solution

The fourth proportional to 1,129,289.76, 1,558,370.88 and 620,000.64 is: 855,573.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,289.76 : 1,558,370.88 = 620,000.64 : x
  2. Step 2: Convert to fraction form
    1,129,289.76/1,558,370.88 = 620,000.64/x
  3. Step 3: Cross multiply
    1,129,289.76x = 1,558,370.88 × 620,000.64
  4. Step 4: Simplify right side
    1,129,289.76x = 966,190,942,957.36
  5. Step 5: Solve for x
    x = 966,190,942,957.36/1,129,289.76
  6. Step 6: Final answer
    x = 855,573.99

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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.