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Finding the Fourth Proportional to 807,657.80, 1,209,153.90 and 492,729.80

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Solution

The fourth proportional to 807,657.80, 1,209,153.90 and 492,729.80 is: 737,671.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,657.80 : 1,209,153.90 = 492,729.80 : x
  2. Step 2: Convert to fraction form
    807,657.80/1,209,153.90 = 492,729.80/x
  3. Step 3: Cross multiply
    807,657.80x = 1,209,153.90 × 492,729.80
  4. Step 4: Simplify right side
    807,657.80x = 595,786,159,316.22
  5. Step 5: Solve for x
    x = 595,786,159,316.22/807,657.80
  6. Step 6: Final answer
    x = 737,671.52

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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.