Home / 1,426,384.40-1,968,458.08-781,806.25

Finding the Fourth Proportional to 1,426,384.40, 1,968,458.08 and 781,806.25

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Solution

The fourth proportional to 1,426,384.40, 1,968,458.08 and 781,806.25 is: 1,078,918.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426,384.40 : 1,968,458.08 = 781,806.25 : x
  2. Step 2: Convert to fraction form
    1,426,384.40/1,968,458.08 = 781,806.25/x
  3. Step 3: Cross multiply
    1,426,384.40x = 1,968,458.08 × 781,806.25
  4. Step 4: Simplify right side
    1,426,384.40x = 1,538,952,818,507.54
  5. Step 5: Solve for x
    x = 1,538,952,818,507.54/1,426,384.40
  6. Step 6: Final answer
    x = 1,078,918.71

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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.