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Finding the Fourth Proportional to 713,670.39, 984,774.60 and 391,295.64

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Solution

The fourth proportional to 713,670.39, 984,774.60 and 391,295.64 is: 539,938.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,670.39 : 984,774.60 = 391,295.64 : x
  2. Step 2: Convert to fraction form
    713,670.39/984,774.60 = 391,295.64/x
  3. Step 3: Cross multiply
    713,670.39x = 984,774.60 × 391,295.64
  4. Step 4: Simplify right side
    713,670.39x = 385,338,007,362.74
  5. Step 5: Solve for x
    x = 385,338,007,362.74/713,670.39
  6. Step 6: Final answer
    x = 539,938.34

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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.