Home / 3,280,509.20-4,920,763.80-916,605.20

Finding the Fourth Proportional to 3,280,509.20, 4,920,763.80 and 916,605.20

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Solution

The fourth proportional to 3,280,509.20, 4,920,763.80 and 916,605.20 is: 1,374,907.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280,509.20 : 4,920,763.80 = 916,605.20 : x
  2. Step 2: Convert to fraction form
    3,280,509.20/4,920,763.80 = 916,605.20/x
  3. Step 3: Cross multiply
    3,280,509.20x = 4,920,763.80 × 916,605.20
  4. Step 4: Simplify right side
    3,280,509.20x = 4,510,397,687,051.76
  5. Step 5: Solve for x
    x = 4,510,397,687,051.76/3,280,509.20
  6. Step 6: Final answer
    x = 1,374,907.80

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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.