Home / 1,005,867.71-1,388,069.75-553,158.71

Finding the Fourth Proportional to 1,005,867.71, 1,388,069.75 and 553,158.71

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Solution

The fourth proportional to 1,005,867.71, 1,388,069.75 and 553,158.71 is: 763,343.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005,867.71 : 1,388,069.75 = 553,158.71 : x
  2. Step 2: Convert to fraction form
    1,005,867.71/1,388,069.75 = 553,158.71/x
  3. Step 3: Cross multiply
    1,005,867.71x = 1,388,069.75 × 553,158.71
  4. Step 4: Simplify right side
    1,005,867.71x = 767,822,865,359.67
  5. Step 5: Solve for x
    x = 767,822,865,359.67/1,005,867.71
  6. Step 6: Final answer
    x = 763,343.79

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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.