Home / 768,665.04-1,153,706.28-389,851.60

Finding the Fourth Proportional to 768,665.04, 1,153,706.28 and 389,851.60

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Solution

The fourth proportional to 768,665.04, 1,153,706.28 and 389,851.60 is: 585,136.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,665.04 : 1,153,706.28 = 389,851.60 : x
  2. Step 2: Convert to fraction form
    768,665.04/1,153,706.28 = 389,851.60/x
  3. Step 3: Cross multiply
    768,665.04x = 1,153,706.28 × 389,851.60
  4. Step 4: Simplify right side
    768,665.04x = 449,774,239,188.05
  5. Step 5: Solve for x
    x = 449,774,239,188.05/768,665.04
  6. Step 6: Final answer
    x = 585,136.85

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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.