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Finding the Fourth Proportional to 448,365.15, 617,484.20 and 438,567.39

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Solution

The fourth proportional to 448,365.15, 617,484.20 and 438,567.39 is: 603,990.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,365.15 : 617,484.20 = 438,567.39 : x
  2. Step 2: Convert to fraction form
    448,365.15/617,484.20 = 438,567.39/x
  3. Step 3: Cross multiply
    448,365.15x = 617,484.20 × 438,567.39
  4. Step 4: Simplify right side
    448,365.15x = 270,808,431,767.40
  5. Step 5: Solve for x
    x = 270,808,431,767.40/448,365.15
  6. Step 6: Final answer
    x = 603,990.81

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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.