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Finding the Fourth Proportional to 644,088.10, 888,881.80 and 372,205.92

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Solution

The fourth proportional to 644,088.10, 888,881.80 and 372,205.92 is: 513,667.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,088.10 : 888,881.80 = 372,205.92 : x
  2. Step 2: Convert to fraction form
    644,088.10/888,881.80 = 372,205.92/x
  3. Step 3: Cross multiply
    644,088.10x = 888,881.80 × 372,205.92
  4. Step 4: Simplify right side
    644,088.10x = 330,847,068,140.26
  5. Step 5: Solve for x
    x = 330,847,068,140.26/644,088.10
  6. Step 6: Final answer
    x = 513,667.41

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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.