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Finding the Fourth Proportional to 671,827.20, 927,121.51 and 370,021.20

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Solution

The fourth proportional to 671,827.20, 927,121.51 and 370,021.20 is: 510,629.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,827.20 : 927,121.51 = 370,021.20 : x
  2. Step 2: Convert to fraction form
    671,827.20/927,121.51 = 370,021.20/x
  3. Step 3: Cross multiply
    671,827.20x = 927,121.51 × 370,021.20
  4. Step 4: Simplify right side
    671,827.20x = 343,054,613,676.01
  5. Step 5: Solve for x
    x = 343,054,613,676.01/671,827.20
  6. Step 6: Final answer
    x = 510,629.24

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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.