Home / 912,909.60-1,370,530.80-486,784.80

Finding the Fourth Proportional to 912,909.60, 1,370,530.80 and 486,784.80

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Solution

The fourth proportional to 912,909.60, 1,370,530.80 and 486,784.80 is: 730,799.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,909.60 : 1,370,530.80 = 486,784.80 : x
  2. Step 2: Convert to fraction form
    912,909.60/1,370,530.80 = 486,784.80/x
  3. Step 3: Cross multiply
    912,909.60x = 1,370,530.80 × 486,784.80
  4. Step 4: Simplify right side
    912,909.60x = 667,153,561,371.84
  5. Step 5: Solve for x
    x = 667,153,561,371.84/912,909.60
  6. Step 6: Final answer
    x = 730,799.15

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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.