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Finding the Fourth Proportional to 858,978.08, 1,185,049.80 and 496,335.12

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Solution

The fourth proportional to 858,978.08, 1,185,049.80 and 496,335.12 is: 684,746.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,978.08 : 1,185,049.80 = 496,335.12 : x
  2. Step 2: Convert to fraction form
    858,978.08/1,185,049.80 = 496,335.12/x
  3. Step 3: Cross multiply
    858,978.08x = 1,185,049.80 × 496,335.12
  4. Step 4: Simplify right side
    858,978.08x = 588,181,834,688.98
  5. Step 5: Solve for x
    x = 588,181,834,688.98/858,978.08
  6. Step 6: Final answer
    x = 684,746.04

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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.