Home / 868,539.20-1,302,938.40-307,529.60

Finding the Fourth Proportional to 868,539.20, 1,302,938.40 and 307,529.60

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Solution

The fourth proportional to 868,539.20, 1,302,938.40 and 307,529.60 is: 461,340.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,539.20 : 1,302,938.40 = 307,529.60 : x
  2. Step 2: Convert to fraction form
    868,539.20/1,302,938.40 = 307,529.60/x
  3. Step 3: Cross multiply
    868,539.20x = 1,302,938.40 × 307,529.60
  4. Step 4: Simplify right side
    868,539.20x = 400,692,124,976.64
  5. Step 5: Solve for x
    x = 400,692,124,976.64/868,539.20
  6. Step 6: Final answer
    x = 461,340.29

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1.5x scale

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.