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Finding the Fourth Proportional to 468,349.69, 646,338.24 and 287,026.60

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Solution

The fourth proportional to 468,349.69, 646,338.24 and 287,026.60 is: 396,106.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,349.69 : 646,338.24 = 287,026.60 : x
  2. Step 2: Convert to fraction form
    468,349.69/646,338.24 = 287,026.60/x
  3. Step 3: Cross multiply
    468,349.69x = 646,338.24 × 287,026.60
  4. Step 4: Simplify right side
    468,349.69x = 185,516,267,477.18
  5. Step 5: Solve for x
    x = 185,516,267,477.18/468,349.69
  6. Step 6: Final answer
    x = 396,106.31

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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.