Home / 858,912.40-1,288,368.60-439,008.40

Finding the Fourth Proportional to 858,912.40, 1,288,368.60 and 439,008.40

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Solution

The fourth proportional to 858,912.40, 1,288,368.60 and 439,008.40 is: 658,512.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,912.40 : 1,288,368.60 = 439,008.40 : x
  2. Step 2: Convert to fraction form
    858,912.40/1,288,368.60 = 439,008.40/x
  3. Step 3: Cross multiply
    858,912.40x = 1,288,368.60 × 439,008.40
  4. Step 4: Simplify right side
    858,912.40x = 565,604,637,696.24
  5. Step 5: Solve for x
    x = 565,604,637,696.24/858,912.40
  6. Step 6: Final answer
    x = 658,512.60

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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.