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Finding the Fourth Proportional to 612,112.70, 844,698.65 and 340,173.74

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Solution

The fourth proportional to 612,112.70, 844,698.65 and 340,173.74 is: 469,430.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,112.70 : 844,698.65 = 340,173.74 : x
  2. Step 2: Convert to fraction form
    612,112.70/844,698.65 = 340,173.74/x
  3. Step 3: Cross multiply
    612,112.70x = 844,698.65 × 340,173.74
  4. Step 4: Simplify right side
    612,112.70x = 287,344,298,943.45
  5. Step 5: Solve for x
    x = 287,344,298,943.45/612,112.70
  6. Step 6: Final answer
    x = 469,430.38

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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.