Home / 1,385,477.76-1,912,278.06-812,702.46

Finding the Fourth Proportional to 1,385,477.76, 1,912,278.06 and 812,702.46

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Solution

The fourth proportional to 1,385,477.76, 1,912,278.06 and 812,702.46 is: 1,121,716.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,477.76 : 1,912,278.06 = 812,702.46 : x
  2. Step 2: Convert to fraction form
    1,385,477.76/1,912,278.06 = 812,702.46/x
  3. Step 3: Cross multiply
    1,385,477.76x = 1,912,278.06 × 812,702.46
  4. Step 4: Simplify right side
    1,385,477.76x = 1,554,113,083,566.03
  5. Step 5: Solve for x
    x = 1,554,113,083,566.03/1,385,477.76
  6. Step 6: Final answer
    x = 1,121,716.37

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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.