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Finding the Fourth Proportional to 620,021.37, 855,570.38 and 348,026.92

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Solution

The fourth proportional to 620,021.37, 855,570.38 and 348,026.92 is: 480,243.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,021.37 : 855,570.38 = 348,026.92 : x
  2. Step 2: Convert to fraction form
    620,021.37/855,570.38 = 348,026.92/x
  3. Step 3: Cross multiply
    620,021.37x = 855,570.38 × 348,026.92
  4. Step 4: Simplify right side
    620,021.37x = 297,761,525,064.70
  5. Step 5: Solve for x
    x = 297,761,525,064.70/620,021.37
  6. Step 6: Final answer
    x = 480,243.98

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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.