Home / 738,349.08-1,018,921.68-398,817.33

Finding the Fourth Proportional to 738,349.08, 1,018,921.68 and 398,817.33

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Solution

The fourth proportional to 738,349.08, 1,018,921.68 and 398,817.33 is: 550,367.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,349.08 : 1,018,921.68 = 398,817.33 : x
  2. Step 2: Convert to fraction form
    738,349.08/1,018,921.68 = 398,817.33/x
  3. Step 3: Cross multiply
    738,349.08x = 1,018,921.68 × 398,817.33
  4. Step 4: Simplify right side
    738,349.08x = 406,363,623,896.71
  5. Step 5: Solve for x
    x = 406,363,623,896.71/738,349.08
  6. Step 6: Final answer
    x = 550,367.89

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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.