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Finding the Fourth Proportional to 551,267.57, 760,532.15 and 318,540.74

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Solution

The fourth proportional to 551,267.57, 760,532.15 and 318,540.74 is: 439,460.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,267.57 : 760,532.15 = 318,540.74 : x
  2. Step 2: Convert to fraction form
    551,267.57/760,532.15 = 318,540.74/x
  3. Step 3: Cross multiply
    551,267.57x = 760,532.15 × 318,540.74
  4. Step 4: Simplify right side
    551,267.57x = 242,260,470,848.48
  5. Step 5: Solve for x
    x = 242,260,470,848.48/551,267.57
  6. Step 6: Final answer
    x = 439,460.77

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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.