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Finding the Fourth Proportional to 628,280.65, 866,999.97 and 348,860.44

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Solution

The fourth proportional to 628,280.65, 866,999.97 and 348,860.44 is: 481,412.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,280.65 : 866,999.97 = 348,860.44 : x
  2. Step 2: Convert to fraction form
    628,280.65/866,999.97 = 348,860.44/x
  3. Step 3: Cross multiply
    628,280.65x = 866,999.97 × 348,860.44
  4. Step 4: Simplify right side
    628,280.65x = 302,461,994,720.34
  5. Step 5: Solve for x
    x = 302,461,994,720.34/628,280.65
  6. Step 6: Final answer
    x = 481,412.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.