Home / 661,624.38-913,040.64-403,500.87

Finding the Fourth Proportional to 661,624.38, 913,040.64 and 403,500.87

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Solution

The fourth proportional to 661,624.38, 913,040.64 and 403,500.87 is: 556,830.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,624.38 : 913,040.64 = 403,500.87 : x
  2. Step 2: Convert to fraction form
    661,624.38/913,040.64 = 403,500.87/x
  3. Step 3: Cross multiply
    661,624.38x = 913,040.64 × 403,500.87
  4. Step 4: Simplify right side
    661,624.38x = 368,412,692,585.36
  5. Step 5: Solve for x
    x = 368,412,692,585.36/661,624.38
  6. Step 6: Final answer
    x = 556,830.59

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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.