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Finding the Fourth Proportional to 638,123.37, 880,598.91 and 347,737.47

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Solution

The fourth proportional to 638,123.37, 880,598.91 and 347,737.47 is: 479,871.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,123.37 : 880,598.91 = 347,737.47 : x
  2. Step 2: Convert to fraction form
    638,123.37/880,598.91 = 347,737.47/x
  3. Step 3: Cross multiply
    638,123.37x = 880,598.91 × 347,737.47
  4. Step 4: Simplify right side
    638,123.37x = 306,217,237,048.16
  5. Step 5: Solve for x
    x = 306,217,237,048.16/638,123.37
  6. Step 6: Final answer
    x = 479,871.53

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1.5x scale

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.