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Finding the Fourth Proportional to 620,014.72, 855,561.28 and 348,020.28

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Solution

The fourth proportional to 620,014.72, 855,561.28 and 348,020.28 is: 480,234.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,014.72 : 855,561.28 = 348,020.28 : x
  2. Step 2: Convert to fraction form
    620,014.72/855,561.28 = 348,020.28/x
  3. Step 3: Cross multiply
    620,014.72x = 855,561.28 × 348,020.28
  4. Step 4: Simplify right side
    620,014.72x = 297,752,676,222.76
  5. Step 5: Solve for x
    x = 297,752,676,222.76/620,014.72
  6. Step 6: Final answer
    x = 480,234.85

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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.