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Finding the Fourth Proportional to 530,074.75, 731,503.16 and 291,610.75

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Solution

The fourth proportional to 530,074.75, 731,503.16 and 291,610.75 is: 402,422.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,074.75 : 731,503.16 = 291,610.75 : x
  2. Step 2: Convert to fraction form
    530,074.75/731,503.16 = 291,610.75/x
  3. Step 3: Cross multiply
    530,074.75x = 731,503.16 × 291,610.75
  4. Step 4: Simplify right side
    530,074.75x = 213,314,185,114.97
  5. Step 5: Solve for x
    x = 213,314,185,114.97/530,074.75
  6. Step 6: Final answer
    x = 402,422.84

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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.