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Finding the Fourth Proportional to 709,944.22, 979,167.72 and 455,319.10

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Solution

The fourth proportional to 709,944.22, 979,167.72 and 455,319.10 is: 627,984.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,944.22 : 979,167.72 = 455,319.10 : x
  2. Step 2: Convert to fraction form
    709,944.22/979,167.72 = 455,319.10/x
  3. Step 3: Cross multiply
    709,944.22x = 979,167.72 × 455,319.10
  4. Step 4: Simplify right side
    709,944.22x = 445,833,765,019.45
  5. Step 5: Solve for x
    x = 445,833,765,019.45/709,944.22
  6. Step 6: Final answer
    x = 627,984.22

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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.