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Finding the Fourth Proportional to 570,360.80, 787,116.48 and 328,624.64

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Solution

The fourth proportional to 570,360.80, 787,116.48 and 328,624.64 is: 453,512.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,360.80 : 787,116.48 = 328,624.64 : x
  2. Step 2: Convert to fraction form
    570,360.80/787,116.48 = 328,624.64/x
  3. Step 3: Cross multiply
    570,360.80x = 787,116.48 × 328,624.64
  4. Step 4: Simplify right side
    570,360.80x = 258,665,869,878.07
  5. Step 5: Solve for x
    x = 258,665,869,878.07/570,360.80
  6. Step 6: Final answer
    x = 453,512.71

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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.