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Finding the Fourth Proportional to 713,378.35, 984,450.95 and 391,091.10

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Solution

The fourth proportional to 713,378.35, 984,450.95 and 391,091.10 is: 539,699.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,378.35 : 984,450.95 = 391,091.10 : x
  2. Step 2: Convert to fraction form
    713,378.35/984,450.95 = 391,091.10/x
  3. Step 3: Cross multiply
    713,378.35x = 984,450.95 × 391,091.10
  4. Step 4: Simplify right side
    713,378.35x = 385,009,998,053.84
  5. Step 5: Solve for x
    x = 385,009,998,053.84/713,378.35
  6. Step 6: Final answer
    x = 539,699.58

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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.