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Finding the Fourth Proportional to 964,645.20, 1,447,486.20 and 403,736.40

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Solution

The fourth proportional to 964,645.20, 1,447,486.20 and 403,736.40 is: 605,821.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    964,645.20 : 1,447,486.20 = 403,736.40 : x
  2. Step 2: Convert to fraction form
    964,645.20/1,447,486.20 = 403,736.40/x
  3. Step 3: Cross multiply
    964,645.20x = 1,447,486.20 × 403,736.40
  4. Step 4: Simplify right side
    964,645.20x = 584,402,867,437.68
  5. Step 5: Solve for x
    x = 584,402,867,437.68/964,645.20
  6. Step 6: Final answer
    x = 605,821.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.