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Finding the Fourth Proportional to 706,254, 974,630.52 and 388,302

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Solution

The fourth proportional to 706,254, 974,630.52 and 388,302 is: 535,856.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,254 : 974,630.52 = 388,302 : x
  2. Step 2: Convert to fraction form
    706,254/974,630.52 = 388,302/x
  3. Step 3: Cross multiply
    706,254x = 974,630.52 × 388,302
  4. Step 4: Simplify right side
    706,254x = 378,450,980,177.04
  5. Step 5: Solve for x
    x = 378,450,980,177.04/706,254
  6. Step 6: Final answer
    x = 535,856.76

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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.