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Finding the Fourth Proportional to 623,280, 860,108.16 and 351,363.84

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Solution

The fourth proportional to 623,280, 860,108.16 and 351,363.84 is: 484,871.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,280 : 860,108.16 = 351,363.84 : x
  2. Step 2: Convert to fraction form
    623,280/860,108.16 = 351,363.84/x
  3. Step 3: Cross multiply
    623,280x = 860,108.16 × 351,363.84
  4. Step 4: Simplify right side
    623,280x = 302,210,905,912.93
  5. Step 5: Solve for x
    x = 302,210,905,912.93/623,280
  6. Step 6: Final answer
    x = 484,871.82

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.