Home / 638,426.67-881,023.02-351,946.76

Finding the Fourth Proportional to 638,426.67, 881,023.02 and 351,946.76

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Solution

The fourth proportional to 638,426.67, 881,023.02 and 351,946.76 is: 485,683.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,426.67 : 881,023.02 = 351,946.76 : x
  2. Step 2: Convert to fraction form
    638,426.67/881,023.02 = 351,946.76/x
  3. Step 3: Cross multiply
    638,426.67x = 881,023.02 × 351,946.76
  4. Step 4: Simplify right side
    638,426.67x = 310,073,192,969.30
  5. Step 5: Solve for x
    x = 310,073,192,969.30/638,426.67
  6. Step 6: Final answer
    x = 485,683.33

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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.