Home / 645,142,350.73-967,719,126.51-208,443,081.53

Finding the Fourth Proportional to 645,142,350.73, 967,719,126.51 and 208,443,081.53

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Solution

The fourth proportional to 645,142,350.73, 967,719,126.51 and 208,443,081.53 is: 312,666,431.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,142,350.73 : 967,719,126.51 = 208,443,081.53 : x
  2. Step 2: Convert to fraction form
    645,142,350.73/967,719,126.51 = 208,443,081.53/x
  3. Step 3: Cross multiply
    645,142,350.73x = 967,719,126.51 × 208,443,081.53
  4. Step 4: Simplify right side
    645,142,350.73x = 201,714,356,782,235,360
  5. Step 5: Solve for x
    x = 201,714,356,782,235,360/645,142,350.73
  6. Step 6: Final answer
    x = 312,666,431.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.