Home / 648,903.38-895,538.81-358,540.25

Finding the Fourth Proportional to 648,903.38, 895,538.81 and 358,540.25

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Solution

The fourth proportional to 648,903.38, 895,538.81 and 358,540.25 is: 494,814.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,903.38 : 895,538.81 = 358,540.25 : x
  2. Step 2: Convert to fraction form
    648,903.38/895,538.81 = 358,540.25/x
  3. Step 3: Cross multiply
    648,903.38x = 895,538.81 × 358,540.25
  4. Step 4: Simplify right side
    648,903.38x = 321,086,707,029.40
  5. Step 5: Solve for x
    x = 321,086,707,029.40/648,903.38
  6. Step 6: Final answer
    x = 494,814.35

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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.