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Finding the Fourth Proportional to 620,021.12, 855,570.04 and 348,026.67

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Solution

The fourth proportional to 620,021.12, 855,570.04 and 348,026.67 is: 480,243.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,021.12 : 855,570.04 = 348,026.67 : x
  2. Step 2: Convert to fraction form
    620,021.12/855,570.04 = 348,026.67/x
  3. Step 3: Cross multiply
    620,021.12x = 855,570.04 × 348,026.67
  4. Step 4: Simplify right side
    620,021.12x = 297,761,191,102.90
  5. Step 5: Solve for x
    x = 297,761,191,102.90/620,021.12
  6. Step 6: Final answer
    x = 480,243.63

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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.