Home / 927,209.20-1,390,468.20-645,890.80

Finding the Fourth Proportional to 927,209.20, 1,390,468.20 and 645,890.80

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Solution

The fourth proportional to 927,209.20, 1,390,468.20 and 645,890.80 is: 968,595.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    927,209.20 : 1,390,468.20 = 645,890.80 : x
  2. Step 2: Convert to fraction form
    927,209.20/1,390,468.20 = 645,890.80/x
  3. Step 3: Cross multiply
    927,209.20x = 1,390,468.20 × 645,890.80
  4. Step 4: Simplify right side
    927,209.20x = 898,090,618,072.56
  5. Step 5: Solve for x
    x = 898,090,618,072.56/927,209.20
  6. Step 6: Final answer
    x = 968,595.46

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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.