Home / 645,922.54-891,366.69-359,437.69

Finding the Fourth Proportional to 645,922.54, 891,366.69 and 359,437.69

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Solution

The fourth proportional to 645,922.54, 891,366.69 and 359,437.69 is: 496,020.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,922.54 : 891,366.69 = 359,437.69 : x
  2. Step 2: Convert to fraction form
    645,922.54/891,366.69 = 359,437.69/x
  3. Step 3: Cross multiply
    645,922.54x = 891,366.69 × 359,437.69
  4. Step 4: Simplify right side
    645,922.54x = 320,390,783,996.55
  5. Step 5: Solve for x
    x = 320,390,783,996.55/645,922.54
  6. Step 6: Final answer
    x = 496,020.44

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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.