Home / 656,779.20-985,095.90-538,243.80

Finding the Fourth Proportional to 656,779.20, 985,095.90 and 538,243.80

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Solution

The fourth proportional to 656,779.20, 985,095.90 and 538,243.80 is: 807,305.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,779.20 : 985,095.90 = 538,243.80 : x
  2. Step 2: Convert to fraction form
    656,779.20/985,095.90 = 538,243.80/x
  3. Step 3: Cross multiply
    656,779.20x = 985,095.90 × 538,243.80
  4. Step 4: Simplify right side
    656,779.20x = 530,221,760,580.42
  5. Step 5: Solve for x
    x = 530,221,760,580.42/656,779.20
  6. Step 6: Final answer
    x = 807,305.96

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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.