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Finding the Fourth Proportional to 528,280.40, 791,837.40 and 291,792.80

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Solution

The fourth proportional to 528,280.40, 791,837.40 and 291,792.80 is: 437,367.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,280.40 : 791,837.40 = 291,792.80 : x
  2. Step 2: Convert to fraction form
    528,280.40/791,837.40 = 291,792.80/x
  3. Step 3: Cross multiply
    528,280.40x = 791,837.40 × 291,792.80
  4. Step 4: Simplify right side
    528,280.40x = 231,052,452,090.72
  5. Step 5: Solve for x
    x = 231,052,452,090.72/528,280.40
  6. Step 6: Final answer
    x = 437,367.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.