Home / 1,385,479.26-1,912,280.13-812,703.96

Finding the Fourth Proportional to 1,385,479.26, 1,912,280.13 and 812,703.96

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Solution

The fourth proportional to 1,385,479.26, 1,912,280.13 and 812,703.96 is: 1,121,718.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,479.26 : 1,912,280.13 = 812,703.96 : x
  2. Step 2: Convert to fraction form
    1,385,479.26/1,912,280.13 = 812,703.96/x
  3. Step 3: Cross multiply
    1,385,479.26x = 1,912,280.13 × 812,703.96
  4. Step 4: Simplify right side
    1,385,479.26x = 1,554,117,634,280.31
  5. Step 5: Solve for x
    x = 1,554,117,634,280.31/1,385,479.26
  6. Step 6: Final answer
    x = 1,121,718.44

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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.