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Finding the Fourth Proportional to 485,704, 670,271.52 and 284,500

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Solution

The fourth proportional to 485,704, 670,271.52 and 284,500 is: 392,610

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,704 : 670,271.52 = 284,500 : x
  2. Step 2: Convert to fraction form
    485,704/670,271.52 = 284,500/x
  3. Step 3: Cross multiply
    485,704x = 670,271.52 × 284,500
  4. Step 4: Simplify right side
    485,704x = 190,692,247,440
  5. Step 5: Solve for x
    x = 190,692,247,440/485,704
  6. Step 6: Final answer
    x = 392,610

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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.