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Finding the Fourth Proportional to 620,118.39, 855,813.02 and 348,204.36

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Solution

The fourth proportional to 620,118.39, 855,813.02 and 348,204.36 is: 480,549.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,118.39 : 855,813.02 = 348,204.36 : x
  2. Step 2: Convert to fraction form
    620,118.39/855,813.02 = 348,204.36/x
  3. Step 3: Cross multiply
    620,118.39x = 855,813.02 × 348,204.36
  4. Step 4: Simplify right side
    620,118.39x = 297,997,823,167.75
  5. Step 5: Solve for x
    x = 297,997,823,167.75/620,118.39
  6. Step 6: Final answer
    x = 480,549.89

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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.