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Finding the Fourth Proportional to 630,432.80, 945,778.80 and 210,010.40

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Solution

The fourth proportional to 630,432.80, 945,778.80 and 210,010.40 is: 315,058.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,432.80 : 945,778.80 = 210,010.40 : x
  2. Step 2: Convert to fraction form
    630,432.80/945,778.80 = 210,010.40/x
  3. Step 3: Cross multiply
    630,432.80x = 945,778.80 × 210,010.40
  4. Step 4: Simplify right side
    630,432.80x = 198,623,384,099.52
  5. Step 5: Solve for x
    x = 198,623,384,099.52/630,432.80
  6. Step 6: Final answer
    x = 315,058.77

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1.5x scale

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.