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Finding the Fourth Proportional to 572,395.99, 789,866.90 and 317,727.13

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Solution

The fourth proportional to 572,395.99, 789,866.90 and 317,727.13 is: 438,441.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,395.99 : 789,866.90 = 317,727.13 : x
  2. Step 2: Convert to fraction form
    572,395.99/789,866.90 = 317,727.13/x
  3. Step 3: Cross multiply
    572,395.99x = 789,866.90 × 317,727.13
  4. Step 4: Simplify right side
    572,395.99x = 250,962,141,630.36
  5. Step 5: Solve for x
    x = 250,962,141,630.36/572,395.99
  6. Step 6: Final answer
    x = 438,441.47

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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.