Home / 1,393,364.52-1,922,689.29-781,391.35

Finding the Fourth Proportional to 1,393,364.52, 1,922,689.29 and 781,391.35

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Solution

The fourth proportional to 1,393,364.52, 1,922,689.29 and 781,391.35 is: 1,078,233.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393,364.52 : 1,922,689.29 = 781,391.35 : x
  2. Step 2: Convert to fraction form
    1,393,364.52/1,922,689.29 = 781,391.35/x
  3. Step 3: Cross multiply
    1,393,364.52x = 1,922,689.29 × 781,391.35
  4. Step 4: Simplify right side
    1,393,364.52x = 1,502,372,779,943.64
  5. Step 5: Solve for x
    x = 1,502,372,779,943.64/1,393,364.52
  6. Step 6: Final answer
    x = 1,078,233.84

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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.