Home / 1,393,362.52-1,922,686.53-781,389.35

Finding the Fourth Proportional to 1,393,362.52, 1,922,686.53 and 781,389.35

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Solution

The fourth proportional to 1,393,362.52, 1,922,686.53 and 781,389.35 is: 1,078,231.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393,362.52 : 1,922,686.53 = 781,389.35 : x
  2. Step 2: Convert to fraction form
    1,393,362.52/1,922,686.53 = 781,389.35/x
  3. Step 3: Cross multiply
    1,393,362.52x = 1,922,686.53 × 781,389.35
  4. Step 4: Simplify right side
    1,393,362.52x = 1,502,366,777,930.46
  5. Step 5: Solve for x
    x = 1,502,366,777,930.46/1,393,362.52
  6. Step 6: Final answer
    x = 1,078,231.08

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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.