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Finding the Fourth Proportional to 572,009.31, 789,372.95 and 317,359.89

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Solution

The fourth proportional to 572,009.31, 789,372.95 and 317,359.89 is: 437,956.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,009.31 : 789,372.95 = 317,359.89 : x
  2. Step 2: Convert to fraction form
    572,009.31/789,372.95 = 317,359.89/x
  3. Step 3: Cross multiply
    572,009.31x = 789,372.95 × 317,359.89
  4. Step 4: Simplify right side
    572,009.31x = 250,515,310,994.18
  5. Step 5: Solve for x
    x = 250,515,310,994.18/572,009.31
  6. Step 6: Final answer
    x = 437,956.70

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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.