Home / 739,435.89-1,020,422.21-399,904.14

Finding the Fourth Proportional to 739,435.89, 1,020,422.21 and 399,904.14

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Solution

The fourth proportional to 739,435.89, 1,020,422.21 and 399,904.14 is: 551,868.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,435.89 : 1,020,422.21 = 399,904.14 : x
  2. Step 2: Convert to fraction form
    739,435.89/1,020,422.21 = 399,904.14/x
  3. Step 3: Cross multiply
    739,435.89x = 1,020,422.21 × 399,904.14
  4. Step 4: Simplify right side
    739,435.89x = 408,071,066,326.95
  5. Step 5: Solve for x
    x = 408,071,066,326.95/739,435.89
  6. Step 6: Final answer
    x = 551,868.08

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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.