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Finding the Fourth Proportional to 930,963, 1,396,444.50 and 339,987

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Solution

The fourth proportional to 930,963, 1,396,444.50 and 339,987 is: 509,980.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    930,963 : 1,396,444.50 = 339,987 : x
  2. Step 2: Convert to fraction form
    930,963/1,396,444.50 = 339,987/x
  3. Step 3: Cross multiply
    930,963x = 1,396,444.50 × 339,987
  4. Step 4: Simplify right side
    930,963x = 474,772,976,221.50
  5. Step 5: Solve for x
    x = 474,772,976,221.50/930,963
  6. Step 6: Final answer
    x = 509,980.50

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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.