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Finding the Fourth Proportional to 570,985.03, 787,969.38 and 312,845.09

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Solution

The fourth proportional to 570,985.03, 787,969.38 and 312,845.09 is: 431,731.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,985.03 : 787,969.38 = 312,845.09 : x
  2. Step 2: Convert to fraction form
    570,985.03/787,969.38 = 312,845.09/x
  3. Step 3: Cross multiply
    570,985.03x = 787,969.38 × 312,845.09
  4. Step 4: Simplify right side
    570,985.03x = 246,512,348,836.67
  5. Step 5: Solve for x
    x = 246,512,348,836.67/570,985.03
  6. Step 6: Final answer
    x = 431,731.72

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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.