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Finding the Fourth Proportional to 403,327.80, 604,991.70 and 396,329.40

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Solution

The fourth proportional to 403,327.80, 604,991.70 and 396,329.40 is: 594,494.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,327.80 : 604,991.70 = 396,329.40 : x
  2. Step 2: Convert to fraction form
    403,327.80/604,991.70 = 396,329.40/x
  3. Step 3: Cross multiply
    403,327.80x = 604,991.70 × 396,329.40
  4. Step 4: Simplify right side
    403,327.80x = 239,775,997,465.98
  5. Step 5: Solve for x
    x = 239,775,997,465.98/403,327.80
  6. Step 6: Final answer
    x = 594,494.10

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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.