Home / 739,438.81-1,020,426.23-399,907.06

Finding the Fourth Proportional to 739,438.81, 1,020,426.23 and 399,907.06

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Solution

The fourth proportional to 739,438.81, 1,020,426.23 and 399,907.06 is: 551,872.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,438.81 : 1,020,426.23 = 399,907.06 : x
  2. Step 2: Convert to fraction form
    739,438.81/1,020,426.23 = 399,907.06/x
  3. Step 3: Cross multiply
    739,438.81x = 1,020,426.23 × 399,907.06
  4. Step 4: Simplify right side
    739,438.81x = 408,075,653,586.18
  5. Step 5: Solve for x
    x = 408,075,653,586.18/739,438.81
  6. Step 6: Final answer
    x = 551,872.11

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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.