Home / 1,282,308.78-1,769,587.38-709,387.68

Finding the Fourth Proportional to 1,282,308.78, 1,769,587.38 and 709,387.68

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Solution

The fourth proportional to 1,282,308.78, 1,769,587.38 and 709,387.68 is: 978,955.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,282,308.78 : 1,769,587.38 = 709,387.68 : x
  2. Step 2: Convert to fraction form
    1,282,308.78/1,769,587.38 = 709,387.68/x
  3. Step 3: Cross multiply
    1,282,308.78x = 1,769,587.38 × 709,387.68
  4. Step 4: Simplify right side
    1,282,308.78x = 1,255,323,486,055.48
  5. Step 5: Solve for x
    x = 1,255,323,486,055.48/1,282,308.78
  6. Step 6: Final answer
    x = 978,955.70

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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.