Home / 1,277,398.40-1,917,358.24-678,357.84

Finding the Fourth Proportional to 1,277,398.40, 1,917,358.24 and 678,357.84

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Solution

The fourth proportional to 1,277,398.40, 1,917,358.24 and 678,357.84 is: 1,018,206.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,398.40 : 1,917,358.24 = 678,357.84 : x
  2. Step 2: Convert to fraction form
    1,277,398.40/1,917,358.24 = 678,357.84/x
  3. Step 3: Cross multiply
    1,277,398.40x = 1,917,358.24 × 678,357.84
  4. Step 4: Simplify right side
    1,277,398.40x = 1,300,654,994,192.60
  5. Step 5: Solve for x
    x = 1,300,654,994,192.60/1,277,398.40
  6. Step 6: Final answer
    x = 1,018,206.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.