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Finding the Fourth Proportional to 551,818.60, 761,485.12 and 322,397.10

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Solution

The fourth proportional to 551,818.60, 761,485.12 and 322,397.10 is: 444,893.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,818.60 : 761,485.12 = 322,397.10 : x
  2. Step 2: Convert to fraction form
    551,818.60/761,485.12 = 322,397.10/x
  3. Step 3: Cross multiply
    551,818.60x = 761,485.12 × 322,397.10
  4. Step 4: Simplify right side
    551,818.60x = 245,500,593,575.16
  5. Step 5: Solve for x
    x = 245,500,593,575.16/551,818.60
  6. Step 6: Final answer
    x = 444,893.66

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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.