Home / 1,386,429.90-1,913,238-774,587.25

Finding the Fourth Proportional to 1,386,429.90, 1,913,238 and 774,587.25

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Solution

The fourth proportional to 1,386,429.90, 1,913,238 and 774,587.25 is: 1,068,910.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,429.90 : 1,913,238 = 774,587.25 : x
  2. Step 2: Convert to fraction form
    1,386,429.90/1,913,238 = 774,587.25/x
  3. Step 3: Cross multiply
    1,386,429.90x = 1,913,238 × 774,587.25
  4. Step 4: Simplify right side
    1,386,429.90x = 1,481,969,761,015.50
  5. Step 5: Solve for x
    x = 1,481,969,761,015.50/1,386,429.90
  6. Step 6: Final answer
    x = 1,068,910.70

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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.