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Finding the Fourth Proportional to 881,368.96, 1,216,312.32 and 478,960.96

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Solution

The fourth proportional to 881,368.96, 1,216,312.32 and 478,960.96 is: 660,978.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,368.96 : 1,216,312.32 = 478,960.96 : x
  2. Step 2: Convert to fraction form
    881,368.96/1,216,312.32 = 478,960.96/x
  3. Step 3: Cross multiply
    881,368.96x = 1,216,312.32 × 478,960.96
  4. Step 4: Simplify right side
    881,368.96x = 582,566,116,447.03
  5. Step 5: Solve for x
    x = 582,566,116,447.03/881,368.96
  6. Step 6: Final answer
    x = 660,978.71

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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.