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Finding the Fourth Proportional to 889,752.78, 1,334,856.78 and 258,666.62

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Solution

The fourth proportional to 889,752.78, 1,334,856.78 and 258,666.62 is: 388,066.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,752.78 : 1,334,856.78 = 258,666.62 : x
  2. Step 2: Convert to fraction form
    889,752.78/1,334,856.78 = 258,666.62/x
  3. Step 3: Cross multiply
    889,752.78x = 1,334,856.78 × 258,666.62
  4. Step 4: Simplify right side
    889,752.78x = 345,282,884,792.40
  5. Step 5: Solve for x
    x = 345,282,884,792.40/889,752.78
  6. Step 6: Final answer
    x = 388,066.09

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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.