Home / 738,654.40-1,019,341.41-399,122.65

Finding the Fourth Proportional to 738,654.40, 1,019,341.41 and 399,122.65

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Solution

The fourth proportional to 738,654.40, 1,019,341.41 and 399,122.65 is: 550,788.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,654.40 : 1,019,341.41 = 399,122.65 : x
  2. Step 2: Convert to fraction form
    738,654.40/1,019,341.41 = 399,122.65/x
  3. Step 3: Cross multiply
    738,654.40x = 1,019,341.41 × 399,122.65
  4. Step 4: Simplify right side
    738,654.40x = 406,842,244,813.94
  5. Step 5: Solve for x
    x = 406,842,244,813.94/738,654.40
  6. Step 6: Final answer
    x = 550,788.36

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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.