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Finding the Fourth Proportional to 713,377.60, 984,449.91 and 391,090.35

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Solution

The fourth proportional to 713,377.60, 984,449.91 and 391,090.35 is: 539,698.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,377.60 : 984,449.91 = 391,090.35 : x
  2. Step 2: Convert to fraction form
    713,377.60/984,449.91 = 391,090.35/x
  3. Step 3: Cross multiply
    713,377.60x = 984,449.91 × 391,090.35
  4. Step 4: Simplify right side
    713,377.60x = 385,008,859,859.37
  5. Step 5: Solve for x
    x = 385,008,859,859.37/713,377.60
  6. Step 6: Final answer
    x = 539,698.55

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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.