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Finding the Fourth Proportional to 389,772.48, 581,055.78 and 383,630.27

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Solution

The fourth proportional to 389,772.48, 581,055.78 and 383,630.27 is: 571,899.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,772.48 : 581,055.78 = 383,630.27 : x
  2. Step 2: Convert to fraction form
    389,772.48/581,055.78 = 383,630.27/x
  3. Step 3: Cross multiply
    389,772.48x = 581,055.78 × 383,630.27
  4. Step 4: Simplify right side
    389,772.48x = 222,910,582,861.18
  5. Step 5: Solve for x
    x = 222,910,582,861.18/389,772.48
  6. Step 6: Final answer
    x = 571,899.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.