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Finding the Fourth Proportional to 528,041.60, 789,758.40 and 472,284.80

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Solution

The fourth proportional to 528,041.60, 789,758.40 and 472,284.80 is: 706,366.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,041.60 : 789,758.40 = 472,284.80 : x
  2. Step 2: Convert to fraction form
    528,041.60/789,758.40 = 472,284.80/x
  3. Step 3: Cross multiply
    528,041.60x = 789,758.40 × 472,284.80
  4. Step 4: Simplify right side
    528,041.60x = 372,990,887,992.32
  5. Step 5: Solve for x
    x = 372,990,887,992.32/528,041.60
  6. Step 6: Final answer
    x = 706,366.48

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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.