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Finding the Fourth Proportional to 578,753.10, 867,838.05 and 342,168.30

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Solution

The fourth proportional to 578,753.10, 867,838.05 and 342,168.30 is: 513,080.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,753.10 : 867,838.05 = 342,168.30 : x
  2. Step 2: Convert to fraction form
    578,753.10/867,838.05 = 342,168.30/x
  3. Step 3: Cross multiply
    578,753.10x = 867,838.05 × 342,168.30
  4. Step 4: Simplify right side
    578,753.10x = 296,946,670,243.82
  5. Step 5: Solve for x
    x = 296,946,670,243.82/578,753.10
  6. Step 6: Final answer
    x = 513,080.05

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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.