Home / 897,711.12-1,239,290.28-558,288.72

Finding the Fourth Proportional to 897,711.12, 1,239,290.28 and 558,288.72

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Solution

The fourth proportional to 897,711.12, 1,239,290.28 and 558,288.72 is: 770,717.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,711.12 : 1,239,290.28 = 558,288.72 : x
  2. Step 2: Convert to fraction form
    897,711.12/1,239,290.28 = 558,288.72/x
  3. Step 3: Cross multiply
    897,711.12x = 1,239,290.28 × 558,288.72
  4. Step 4: Simplify right side
    897,711.12x = 691,881,784,129.64
  5. Step 5: Solve for x
    x = 691,881,784,129.64/897,711.12
  6. Step 6: Final answer
    x = 770,717.63

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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.