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Finding the Fourth Proportional to 627,430.56, 865,836.72 and 340,941.12

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Solution

The fourth proportional to 627,430.56, 865,836.72 and 340,941.12 is: 470,489.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,430.56 : 865,836.72 = 340,941.12 : x
  2. Step 2: Convert to fraction form
    627,430.56/865,836.72 = 340,941.12/x
  3. Step 3: Cross multiply
    627,430.56x = 865,836.72 × 340,941.12
  4. Step 4: Simplify right side
    627,430.56x = 295,199,341,053.93
  5. Step 5: Solve for x
    x = 295,199,341,053.93/627,430.56
  6. Step 6: Final answer
    x = 470,489.26

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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.