Home / 1,007,815.75-1,390,785.47-555,106.75

Finding the Fourth Proportional to 1,007,815.75, 1,390,785.47 and 555,106.75

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Solution

The fourth proportional to 1,007,815.75, 1,390,785.47 and 555,106.75 is: 766,047.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,007,815.75 : 1,390,785.47 = 555,106.75 : x
  2. Step 2: Convert to fraction form
    1,007,815.75/1,390,785.47 = 555,106.75/x
  3. Step 3: Cross multiply
    1,007,815.75x = 1,390,785.47 × 555,106.75
  4. Step 4: Simplify right side
    1,007,815.75x = 772,034,399,423.39
  5. Step 5: Solve for x
    x = 772,034,399,423.39/1,007,815.75
  6. Step 6: Final answer
    x = 766,047.17

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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.