Home / 739,449.96-1,020,440.93-399,918.21

Finding the Fourth Proportional to 739,449.96, 1,020,440.93 and 399,918.21

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Solution

The fourth proportional to 739,449.96, 1,020,440.93 and 399,918.21 is: 551,887.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,449.96 : 1,020,440.93 = 399,918.21 : x
  2. Step 2: Convert to fraction form
    739,449.96/1,020,440.93 = 399,918.21/x
  3. Step 3: Cross multiply
    739,449.96x = 1,020,440.93 × 399,918.21
  4. Step 4: Simplify right side
    739,449.96x = 408,092,910,136.34
  5. Step 5: Solve for x
    x = 408,092,910,136.34/739,449.96
  6. Step 6: Final answer
    x = 551,887.12

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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.