Home / 739,173.90-1,020,057.75-399,642.15

Finding the Fourth Proportional to 739,173.90, 1,020,057.75 and 399,642.15

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Solution

The fourth proportional to 739,173.90, 1,020,057.75 and 399,642.15 is: 551,504.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,173.90 : 1,020,057.75 = 399,642.15 : x
  2. Step 2: Convert to fraction form
    739,173.90/1,020,057.75 = 399,642.15/x
  3. Step 3: Cross multiply
    739,173.90x = 1,020,057.75 × 399,642.15
  4. Step 4: Simplify right side
    739,173.90x = 407,658,072,334.16
  5. Step 5: Solve for x
    x = 407,658,072,334.16/739,173.90
  6. Step 6: Final answer
    x = 551,504.96

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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.