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Finding the Fourth Proportional to 889,587, 1,334,239.20 and 290,543.22

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Solution

The fourth proportional to 889,587, 1,334,239.20 and 290,543.22 is: 435,768.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,587 : 1,334,239.20 = 290,543.22 : x
  2. Step 2: Convert to fraction form
    889,587/1,334,239.20 = 290,543.22/x
  3. Step 3: Cross multiply
    889,587x = 1,334,239.20 × 290,543.22
  4. Step 4: Simplify right side
    889,587x = 387,654,153,418.22
  5. Step 5: Solve for x
    x = 387,654,153,418.22/889,587
  6. Step 6: Final answer
    x = 435,768.68

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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.