Home / 819,079.40-1,228,400.40-286,544.90

Finding the Fourth Proportional to 819,079.40, 1,228,400.40 and 286,544.90

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Solution

The fourth proportional to 819,079.40, 1,228,400.40 and 286,544.90 is: 429,740.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,079.40 : 1,228,400.40 = 286,544.90 : x
  2. Step 2: Convert to fraction form
    819,079.40/1,228,400.40 = 286,544.90/x
  3. Step 3: Cross multiply
    819,079.40x = 1,228,400.40 × 286,544.90
  4. Step 4: Simplify right side
    819,079.40x = 351,991,869,777.96
  5. Step 5: Solve for x
    x = 351,991,869,777.96/819,079.40
  6. Step 6: Final answer
    x = 429,740.84

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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.