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Finding the Fourth Proportional to 623,688, 860,691.84 and 348,057.60

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Solution

The fourth proportional to 623,688, 860,691.84 and 348,057.60 is: 480,320.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,688 : 860,691.84 = 348,057.60 : x
  2. Step 2: Convert to fraction form
    623,688/860,691.84 = 348,057.60/x
  3. Step 3: Cross multiply
    623,688x = 860,691.84 × 348,057.60
  4. Step 4: Simplify right side
    623,688x = 299,570,336,169.98
  5. Step 5: Solve for x
    x = 299,570,336,169.98/623,688
  6. Step 6: Final answer
    x = 480,320.83

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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.