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Finding the Fourth Proportional to 663,751.74, 915,975.66 and 361,945.74

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Solution

The fourth proportional to 663,751.74, 915,975.66 and 361,945.74 is: 499,484.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,751.74 : 915,975.66 = 361,945.74 : x
  2. Step 2: Convert to fraction form
    663,751.74/915,975.66 = 361,945.74/x
  3. Step 3: Cross multiply
    663,751.74x = 915,975.66 × 361,945.74
  4. Step 4: Simplify right side
    663,751.74x = 331,533,488,080.69
  5. Step 5: Solve for x
    x = 331,533,488,080.69/663,751.74
  6. Step 6: Final answer
    x = 499,484.17

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1.5x scale

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.