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Finding the Fourth Proportional to 620,237.52, 855,927.78 and 348,305.64

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Solution

The fourth proportional to 620,237.52, 855,927.78 and 348,305.64 is: 480,661.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,237.52 : 855,927.78 = 348,305.64 : x
  2. Step 2: Convert to fraction form
    620,237.52/855,927.78 = 348,305.64/x
  3. Step 3: Cross multiply
    620,237.52x = 855,927.78 × 348,305.64
  4. Step 4: Simplify right side
    620,237.52x = 298,124,473,206.68
  5. Step 5: Solve for x
    x = 298,124,473,206.68/620,237.52
  6. Step 6: Final answer
    x = 480,661.78

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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.