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Finding the Fourth Proportional to 528,280.25, 792,544.77 and 420,616.82

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Solution

The fourth proportional to 528,280.25, 792,544.77 and 420,616.82 is: 631,024.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,280.25 : 792,544.77 = 420,616.82 : x
  2. Step 2: Convert to fraction form
    528,280.25/792,544.77 = 420,616.82/x
  3. Step 3: Cross multiply
    528,280.25x = 792,544.77 × 420,616.82
  4. Step 4: Simplify right side
    528,280.25x = 333,357,656,902.31
  5. Step 5: Solve for x
    x = 333,357,656,902.31/528,280.25
  6. Step 6: Final answer
    x = 631,024.27

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1.5x scale

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.