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Finding the Fourth Proportional to 530,072.75, 731,500.40 and 291,608.75

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Solution

The fourth proportional to 530,072.75, 731,500.40 and 291,608.75 is: 402,420.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,072.75 : 731,500.40 = 291,608.75 : x
  2. Step 2: Convert to fraction form
    530,072.75/731,500.40 = 291,608.75/x
  3. Step 3: Cross multiply
    530,072.75x = 731,500.40 × 291,608.75
  4. Step 4: Simplify right side
    530,072.75x = 213,311,917,268.50
  5. Step 5: Solve for x
    x = 213,311,917,268.50/530,072.75
  6. Step 6: Final answer
    x = 402,420.08

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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.