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Finding the Fourth Proportional to 889,055, 1,333,699.68 and 289,806.20

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Solution

The fourth proportional to 889,055, 1,333,699.68 and 289,806.20 is: 434,747.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,055 : 1,333,699.68 = 289,806.20 : x
  2. Step 2: Convert to fraction form
    889,055/1,333,699.68 = 289,806.20/x
  3. Step 3: Cross multiply
    889,055x = 1,333,699.68 × 289,806.20
  4. Step 4: Simplify right side
    889,055x = 386,514,436,202.02
  5. Step 5: Solve for x
    x = 386,514,436,202.02/889,055
  6. Step 6: Final answer
    x = 434,747.50

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1.5x scale

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.