Home / 1,007,816.70-1,390,786.80-555,107.70

Finding the Fourth Proportional to 1,007,816.70, 1,390,786.80 and 555,107.70

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Solution

The fourth proportional to 1,007,816.70, 1,390,786.80 and 555,107.70 is: 766,048.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,007,816.70 : 1,390,786.80 = 555,107.70 : x
  2. Step 2: Convert to fraction form
    1,007,816.70/1,390,786.80 = 555,107.70/x
  3. Step 3: Cross multiply
    1,007,816.70x = 1,390,786.80 × 555,107.70
  4. Step 4: Simplify right side
    1,007,816.70x = 772,036,461,738.36
  5. Step 5: Solve for x
    x = 772,036,461,738.36/1,007,816.70
  6. Step 6: Final answer
    x = 766,048.49

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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.