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Finding the Fourth Proportional to 570,531.44, 787,330.64 and 308,886.90

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Solution

The fourth proportional to 570,531.44, 787,330.64 and 308,886.90 is: 426,262.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,531.44 : 787,330.64 = 308,886.90 : x
  2. Step 2: Convert to fraction form
    570,531.44/787,330.64 = 308,886.90/x
  3. Step 3: Cross multiply
    570,531.44x = 787,330.64 × 308,886.90
  4. Step 4: Simplify right side
    570,531.44x = 243,196,120,664.62
  5. Step 5: Solve for x
    x = 243,196,120,664.62/570,531.44
  6. Step 6: Final answer
    x = 426,262.43

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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.