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Finding the Fourth Proportional to 620,014.37, 855,560.72 and 348,019.92

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Solution

The fourth proportional to 620,014.37, 855,560.72 and 348,019.92 is: 480,234.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,014.37 : 855,560.72 = 348,019.92 : x
  2. Step 2: Convert to fraction form
    620,014.37/855,560.72 = 348,019.92/x
  3. Step 3: Cross multiply
    620,014.37x = 855,560.72 × 348,019.92
  4. Step 4: Simplify right side
    620,014.37x = 297,752,174,199.59
  5. Step 5: Solve for x
    x = 297,752,174,199.59/620,014.37
  6. Step 6: Final answer
    x = 480,234.32

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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.