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Finding the Fourth Proportional to 620,199.80, 930,299.70 and 609,702.20

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Solution

The fourth proportional to 620,199.80, 930,299.70 and 609,702.20 is: 914,553.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,199.80 : 930,299.70 = 609,702.20 : x
  2. Step 2: Convert to fraction form
    620,199.80/930,299.70 = 609,702.20/x
  3. Step 3: Cross multiply
    620,199.80x = 930,299.70 × 609,702.20
  4. Step 4: Simplify right side
    620,199.80x = 567,205,773,749.34
  5. Step 5: Solve for x
    x = 567,205,773,749.34/620,199.80
  6. Step 6: Final answer
    x = 914,553.30

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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.