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Finding the Fourth Proportional to 710,760.06, 980,822.25 and 388,467.54

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Solution

The fourth proportional to 710,760.06, 980,822.25 and 388,467.54 is: 536,070.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,760.06 : 980,822.25 = 388,467.54 : x
  2. Step 2: Convert to fraction form
    710,760.06/980,822.25 = 388,467.54/x
  3. Step 3: Cross multiply
    710,760.06x = 980,822.25 × 388,467.54
  4. Step 4: Simplify right side
    710,760.06x = 381,017,606,634.77
  5. Step 5: Solve for x
    x = 381,017,606,634.77/710,760.06
  6. Step 6: Final answer
    x = 536,070.65

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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.