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Finding the Fourth Proportional to 480,205.12, 662,821.08 and 316,980.76

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Solution

The fourth proportional to 480,205.12, 662,821.08 and 316,980.76 is: 437,524.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,205.12 : 662,821.08 = 316,980.76 : x
  2. Step 2: Convert to fraction form
    480,205.12/662,821.08 = 316,980.76/x
  3. Step 3: Cross multiply
    480,205.12x = 662,821.08 × 316,980.76
  4. Step 4: Simplify right side
    480,205.12x = 210,101,529,682.42
  5. Step 5: Solve for x
    x = 210,101,529,682.42/480,205.12
  6. Step 6: Final answer
    x = 437,524.55

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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.