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Finding the Fourth Proportional to 706,248, 974,622.24 and 388,296

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Solution

The fourth proportional to 706,248, 974,622.24 and 388,296 is: 535,848.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,248 : 974,622.24 = 388,296 : x
  2. Step 2: Convert to fraction form
    706,248/974,622.24 = 388,296/x
  3. Step 3: Cross multiply
    706,248x = 974,622.24 × 388,296
  4. Step 4: Simplify right side
    706,248x = 378,441,917,303.04
  5. Step 5: Solve for x
    x = 378,441,917,303.04/706,248
  6. Step 6: Final answer
    x = 535,848.48

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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.