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Finding the Fourth Proportional to 571,969.84, 789,412.80 and 317,403.04

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Solution

The fourth proportional to 571,969.84, 789,412.80 and 317,403.04 is: 438,068.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,969.84 : 789,412.80 = 317,403.04 : x
  2. Step 2: Convert to fraction form
    571,969.84/789,412.80 = 317,403.04/x
  3. Step 3: Cross multiply
    571,969.84x = 789,412.80 × 317,403.04
  4. Step 4: Simplify right side
    571,969.84x = 250,562,022,534.91
  5. Step 5: Solve for x
    x = 250,562,022,534.91/571,969.84
  6. Step 6: Final answer
    x = 438,068.59

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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.