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Finding the Fourth Proportional to 638,036.19, 880,491.47 and 347,646.33

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Solution

The fourth proportional to 638,036.19, 880,491.47 and 347,646.33 is: 479,752.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,036.19 : 880,491.47 = 347,646.33 : x
  2. Step 2: Convert to fraction form
    638,036.19/880,491.47 = 347,646.33/x
  3. Step 3: Cross multiply
    638,036.19x = 880,491.47 × 347,646.33
  4. Step 4: Simplify right side
    638,036.19x = 306,099,626,403.57
  5. Step 5: Solve for x
    x = 306,099,626,403.57/638,036.19
  6. Step 6: Final answer
    x = 479,752.77

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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.