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Finding the Fourth Proportional to 480,502.75, 662,275 and 439,778.82

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Solution

The fourth proportional to 480,502.75, 662,275 and 439,778.82 is: 606,145.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,502.75 : 662,275 = 439,778.82 : x
  2. Step 2: Convert to fraction form
    480,502.75/662,275 = 439,778.82/x
  3. Step 3: Cross multiply
    480,502.75x = 662,275 × 439,778.82
  4. Step 4: Simplify right side
    480,502.75x = 291,254,518,015.50
  5. Step 5: Solve for x
    x = 291,254,518,015.50/480,502.75
  6. Step 6: Final answer
    x = 606,145.37

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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.