Home / 1,393,359.52-1,922,682.39-781,386.35

Finding the Fourth Proportional to 1,393,359.52, 1,922,682.39 and 781,386.35

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Solution

The fourth proportional to 1,393,359.52, 1,922,682.39 and 781,386.35 is: 1,078,226.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393,359.52 : 1,922,682.39 = 781,386.35 : x
  2. Step 2: Convert to fraction form
    1,393,359.52/1,922,682.39 = 781,386.35/x
  3. Step 3: Cross multiply
    1,393,359.52x = 1,922,682.39 × 781,386.35
  4. Step 4: Simplify right side
    1,393,359.52x = 1,502,357,768,980.71
  5. Step 5: Solve for x
    x = 1,502,357,768,980.71/1,393,359.52
  6. Step 6: Final answer
    x = 1,078,226.94

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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.