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Finding the Fourth Proportional to 878,036, 1,211,690.04 and 475,628

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Solution

The fourth proportional to 878,036, 1,211,690.04 and 475,628 is: 656,366.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,036 : 1,211,690.04 = 475,628 : x
  2. Step 2: Convert to fraction form
    878,036/1,211,690.04 = 475,628/x
  3. Step 3: Cross multiply
    878,036x = 1,211,690.04 × 475,628
  4. Step 4: Simplify right side
    878,036x = 576,313,710,345.12
  5. Step 5: Solve for x
    x = 576,313,710,345.12/878,036
  6. Step 6: Final answer
    x = 656,366.84

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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.