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Finding the Fourth Proportional to 572,375.61, 789,838.83 and 317,706.75

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Solution

The fourth proportional to 572,375.61, 789,838.83 and 317,706.75 is: 438,413.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,375.61 : 789,838.83 = 317,706.75 : x
  2. Step 2: Convert to fraction form
    572,375.61/789,838.83 = 317,706.75/x
  3. Step 3: Cross multiply
    572,375.61x = 789,838.83 × 317,706.75
  4. Step 4: Simplify right side
    572,375.61x = 250,937,127,703.10
  5. Step 5: Solve for x
    x = 250,937,127,703.10/572,375.61
  6. Step 6: Final answer
    x = 438,413.38

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Double scale
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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.