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Finding the Fourth Proportional to 572,005.81, 789,368.12 and 317,356.39

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Solution

The fourth proportional to 572,005.81, 789,368.12 and 317,356.39 is: 437,951.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,005.81 : 789,368.12 = 317,356.39 : x
  2. Step 2: Convert to fraction form
    572,005.81/789,368.12 = 317,356.39/x
  3. Step 3: Cross multiply
    572,005.81x = 789,368.12 × 317,356.39
  4. Step 4: Simplify right side
    572,005.81x = 250,511,016,944.29
  5. Step 5: Solve for x
    x = 250,511,016,944.29/572,005.81
  6. Step 6: Final answer
    x = 437,951.87

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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.