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Finding the Fourth Proportional to 889,039, 1,333,675.68 and 289,790.20

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Solution

The fourth proportional to 889,039, 1,333,675.68 and 289,790.20 is: 434,723.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,039 : 1,333,675.68 = 289,790.20 : x
  2. Step 2: Convert to fraction form
    889,039/1,333,675.68 = 289,790.20/x
  3. Step 3: Cross multiply
    889,039x = 1,333,675.68 × 289,790.20
  4. Step 4: Simplify right side
    889,039x = 386,486,142,042.34
  5. Step 5: Solve for x
    x = 386,486,142,042.34/889,039
  6. Step 6: Final answer
    x = 434,723.50

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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.