Home / 872,815.20-1,309,871.76-648,697.44

Finding the Fourth Proportional to 872,815.20, 1,309,871.76 and 648,697.44

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Solution

The fourth proportional to 872,815.20, 1,309,871.76 and 648,697.44 is: 973,528.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,815.20 : 1,309,871.76 = 648,697.44 : x
  2. Step 2: Convert to fraction form
    872,815.20/1,309,871.76 = 648,697.44/x
  3. Step 3: Cross multiply
    872,815.20x = 1,309,871.76 × 648,697.44
  4. Step 4: Simplify right side
    872,815.20x = 849,710,457,440.29
  5. Step 5: Solve for x
    x = 849,710,457,440.29/872,815.20
  6. Step 6: Final answer
    x = 973,528.48

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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.