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Finding the Fourth Proportional to 571,973.34, 789,417.63 and 317,406.54

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Solution

The fourth proportional to 571,973.34, 789,417.63 and 317,406.54 is: 438,073.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,973.34 : 789,417.63 = 317,406.54 : x
  2. Step 2: Convert to fraction form
    571,973.34/789,417.63 = 317,406.54/x
  3. Step 3: Cross multiply
    571,973.34x = 789,417.63 × 317,406.54
  4. Step 4: Simplify right side
    571,973.34x = 250,566,318,553.30
  5. Step 5: Solve for x
    x = 250,566,318,553.30/571,973.34
  6. Step 6: Final answer
    x = 438,073.42

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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.