Home / 739,455.21-1,020,448.17-399,923.46

Finding the Fourth Proportional to 739,455.21, 1,020,448.17 and 399,923.46

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Solution

The fourth proportional to 739,455.21, 1,020,448.17 and 399,923.46 is: 551,894.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,455.21 : 1,020,448.17 = 399,923.46 : x
  2. Step 2: Convert to fraction form
    739,455.21/1,020,448.17 = 399,923.46/x
  3. Step 3: Cross multiply
    739,455.21x = 1,020,448.17 × 399,923.46
  4. Step 4: Simplify right side
    739,455.21x = 408,101,162,897.07
  5. Step 5: Solve for x
    x = 408,101,162,897.07/739,455.21
  6. Step 6: Final answer
    x = 551,894.36

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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.