Home / 638,259.09-880,801.72-351,779.18

Finding the Fourth Proportional to 638,259.09, 880,801.72 and 351,779.18

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Solution

The fourth proportional to 638,259.09, 880,801.72 and 351,779.18 is: 485,457.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,259.09 : 880,801.72 = 351,779.18 : x
  2. Step 2: Convert to fraction form
    638,259.09/880,801.72 = 351,779.18/x
  3. Step 3: Cross multiply
    638,259.09x = 880,801.72 × 351,779.18
  4. Step 4: Simplify right side
    638,259.09x = 309,847,704,987.37
  5. Step 5: Solve for x
    x = 309,847,704,987.37/638,259.09
  6. Step 6: Final answer
    x = 485,457.57

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Double scale
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Similar ratio
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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.