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Finding the Fourth Proportional to 740,662.71, 1,022,135.54 and 418,386.39

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Solution

The fourth proportional to 740,662.71, 1,022,135.54 and 418,386.39 is: 577,385.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,662.71 : 1,022,135.54 = 418,386.39 : x
  2. Step 2: Convert to fraction form
    740,662.71/1,022,135.54 = 418,386.39/x
  3. Step 3: Cross multiply
    740,662.71x = 1,022,135.54 × 418,386.39
  4. Step 4: Simplify right side
    740,662.71x = 427,647,596,579.37
  5. Step 5: Solve for x
    x = 427,647,596,579.37/740,662.71
  6. Step 6: Final answer
    x = 577,385.08

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Double scale
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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.