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Finding the Fourth Proportional to 644,079.15, 888,856.97 and 357,599.25

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Solution

The fourth proportional to 644,079.15, 888,856.97 and 357,599.25 is: 493,502.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,079.15 : 888,856.97 = 357,599.25 : x
  2. Step 2: Convert to fraction form
    644,079.15/888,856.97 = 357,599.25/x
  3. Step 3: Cross multiply
    644,079.15x = 888,856.97 × 357,599.25
  4. Step 4: Simplify right side
    644,079.15x = 317,854,584,041.28
  5. Step 5: Solve for x
    x = 317,854,584,041.28/644,079.15
  6. Step 6: Final answer
    x = 493,502.37

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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.