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Finding the Fourth Proportional to 570,465.12, 787,236.48 and 328,658.88

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Solution

The fourth proportional to 570,465.12, 787,236.48 and 328,658.88 is: 453,546.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,465.12 : 787,236.48 = 328,658.88 : x
  2. Step 2: Convert to fraction form
    570,465.12/787,236.48 = 328,658.88/x
  3. Step 3: Cross multiply
    570,465.12x = 787,236.48 × 328,658.88
  4. Step 4: Simplify right side
    570,465.12x = 258,732,259,811.94
  5. Step 5: Solve for x
    x = 258,732,259,811.94/570,465.12
  6. Step 6: Final answer
    x = 453,546.15

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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.