Home / 765,444.05-1,148,424.37-338,921.64

Finding the Fourth Proportional to 765,444.05, 1,148,424.37 and 338,921.64

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Solution

The fourth proportional to 765,444.05, 1,148,424.37 and 338,921.64 is: 508,496.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,444.05 : 1,148,424.37 = 338,921.64 : x
  2. Step 2: Convert to fraction form
    765,444.05/1,148,424.37 = 338,921.64/x
  3. Step 3: Cross multiply
    765,444.05x = 1,148,424.37 × 338,921.64
  4. Step 4: Simplify right side
    765,444.05x = 389,225,870,896.37
  5. Step 5: Solve for x
    x = 389,225,870,896.37/765,444.05
  6. Step 6: Final answer
    x = 508,496.83

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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.