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Finding the Fourth Proportional to 448,386.76, 672,580.86 and 307,718.92

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Solution

The fourth proportional to 448,386.76, 672,580.86 and 307,718.92 is: 461,578.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,386.76 : 672,580.86 = 307,718.92 : x
  2. Step 2: Convert to fraction form
    448,386.76/672,580.86 = 307,718.92/x
  3. Step 3: Cross multiply
    448,386.76x = 672,580.86 × 307,718.92
  4. Step 4: Simplify right side
    448,386.76x = 206,965,855,851.87
  5. Step 5: Solve for x
    x = 206,965,855,851.87/448,386.76
  6. Step 6: Final answer
    x = 461,578.87

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1.5x scale

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.