Home / 740,665.71-1,022,139.68-418,389.39

Finding the Fourth Proportional to 740,665.71, 1,022,139.68 and 418,389.39

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Solution

The fourth proportional to 740,665.71, 1,022,139.68 and 418,389.39 is: 577,389.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,665.71 : 1,022,139.68 = 418,389.39 : x
  2. Step 2: Convert to fraction form
    740,665.71/1,022,139.68 = 418,389.39/x
  3. Step 3: Cross multiply
    740,665.71x = 1,022,139.68 × 418,389.39
  4. Step 4: Simplify right side
    740,665.71x = 427,652,395,118.05
  5. Step 5: Solve for x
    x = 427,652,395,118.05/740,665.71
  6. Step 6: Final answer
    x = 577,389.22

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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.