Home / 643,036.59-887,430.38-356,556.67

Finding the Fourth Proportional to 643,036.59, 887,430.38 and 356,556.67

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Solution

The fourth proportional to 643,036.59, 887,430.38 and 356,556.67 is: 492,070.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,036.59 : 887,430.38 = 356,556.67 : x
  2. Step 2: Convert to fraction form
    643,036.59/887,430.38 = 356,556.67/x
  3. Step 3: Cross multiply
    643,036.59x = 887,430.38 × 356,556.67
  4. Step 4: Simplify right side
    643,036.59x = 316,419,221,149.64
  5. Step 5: Solve for x
    x = 316,419,221,149.64/643,036.59
  6. Step 6: Final answer
    x = 492,070.32

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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.