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Finding the Fourth Proportional to 661,671.48, 992,605.64 and 306,721.38

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Solution

The fourth proportional to 661,671.48, 992,605.64 and 306,721.38 is: 460,127.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,671.48 : 992,605.64 = 306,721.38 : x
  2. Step 2: Convert to fraction form
    661,671.48/992,605.64 = 306,721.38/x
  3. Step 3: Cross multiply
    661,671.48x = 992,605.64 × 306,721.38
  4. Step 4: Simplify right side
    661,671.48x = 304,453,371,696.58
  5. Step 5: Solve for x
    x = 304,453,371,696.58/661,671.48
  6. Step 6: Final answer
    x = 460,127.69

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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.