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Finding the Fourth Proportional to 664,019.60, 996,547.80 and 309,077.60

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Solution

The fourth proportional to 664,019.60, 996,547.80 and 309,077.60 is: 463,857.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,019.60 : 996,547.80 = 309,077.60 : x
  2. Step 2: Convert to fraction form
    664,019.60/996,547.80 = 309,077.60/x
  3. Step 3: Cross multiply
    664,019.60x = 996,547.80 × 309,077.60
  4. Step 4: Simplify right side
    664,019.60x = 308,010,602,309.28
  5. Step 5: Solve for x
    x = 308,010,602,309.28/664,019.60
  6. Step 6: Final answer
    x = 463,857.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.