Home / 1,007,877.78-1,390,871.39-555,168.78

Finding the Fourth Proportional to 1,007,877.78, 1,390,871.39 and 555,168.78

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Solution

The fourth proportional to 1,007,877.78, 1,390,871.39 and 555,168.78 is: 766,132.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,007,877.78 : 1,390,871.39 = 555,168.78 : x
  2. Step 2: Convert to fraction form
    1,007,877.78/1,390,871.39 = 555,168.78/x
  3. Step 3: Cross multiply
    1,007,877.78x = 1,390,871.39 × 555,168.78
  4. Step 4: Simplify right side
    1,007,877.78x = 772,168,369,947.36
  5. Step 5: Solve for x
    x = 772,168,369,947.36/1,007,877.78
  6. Step 6: Final answer
    x = 766,132.94

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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.