Home / 739,437.94-1,020,425.03-399,906.19

Finding the Fourth Proportional to 739,437.94, 1,020,425.03 and 399,906.19

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Solution

The fourth proportional to 739,437.94, 1,020,425.03 and 399,906.19 is: 551,870.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,437.94 : 1,020,425.03 = 399,906.19 : x
  2. Step 2: Convert to fraction form
    739,437.94/1,020,425.03 = 399,906.19/x
  3. Step 3: Cross multiply
    739,437.94x = 1,020,425.03 × 399,906.19
  4. Step 4: Simplify right side
    739,437.94x = 408,074,285,927.94
  5. Step 5: Solve for x
    x = 408,074,285,927.94/739,437.94
  6. Step 6: Final answer
    x = 551,870.91

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Half scale
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Double scale
Find fourth proportional to 739,438.94, 1,020,426.41 and 399,907.19
Similar ratio
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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.