Home / 638,845.60-881,605.05-366,931.03

Finding the Fourth Proportional to 638,845.60, 881,605.05 and 366,931.03

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Solution

The fourth proportional to 638,845.60, 881,605.05 and 366,931.03 is: 506,363.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,845.60 : 881,605.05 = 366,931.03 : x
  2. Step 2: Convert to fraction form
    638,845.60/881,605.05 = 366,931.03/x
  3. Step 3: Cross multiply
    638,845.60x = 881,605.05 × 366,931.03
  4. Step 4: Simplify right side
    638,845.60x = 323,488,249,049.70
  5. Step 5: Solve for x
    x = 323,488,249,049.70/638,845.60
  6. Step 6: Final answer
    x = 506,363.74

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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.