Home / 739,445.96-1,020,435.42-399,914.21

Finding the Fourth Proportional to 739,445.96, 1,020,435.42 and 399,914.21

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Solution

The fourth proportional to 739,445.96, 1,020,435.42 and 399,914.21 is: 551,881.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,445.96 : 1,020,435.42 = 399,914.21 : x
  2. Step 2: Convert to fraction form
    739,445.96/1,020,435.42 = 399,914.21/x
  3. Step 3: Cross multiply
    739,445.96x = 1,020,435.42 × 399,914.21
  4. Step 4: Simplify right side
    739,445.96x = 408,086,618,243.46
  5. Step 5: Solve for x
    x = 408,086,618,243.46/739,445.96
  6. Step 6: Final answer
    x = 551,881.60

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Double scale
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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.