Home / 879,289.80-1,318,934.70-436,000.20

Finding the Fourth Proportional to 879,289.80, 1,318,934.70 and 436,000.20

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Solution

The fourth proportional to 879,289.80, 1,318,934.70 and 436,000.20 is: 654,000.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,289.80 : 1,318,934.70 = 436,000.20 : x
  2. Step 2: Convert to fraction form
    879,289.80/1,318,934.70 = 436,000.20/x
  3. Step 3: Cross multiply
    879,289.80x = 1,318,934.70 × 436,000.20
  4. Step 4: Simplify right side
    879,289.80x = 575,055,792,986.94
  5. Step 5: Solve for x
    x = 575,055,792,986.94/879,289.80
  6. Step 6: Final answer
    x = 654,000.30

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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.