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Finding the Fourth Proportional to 878,670.99, 1,317,501.81 and 345,901.32

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Solution

The fourth proportional to 878,670.99, 1,317,501.81 and 345,901.32 is: 518,653.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,670.99 : 1,317,501.81 = 345,901.32 : x
  2. Step 2: Convert to fraction form
    878,670.99/1,317,501.81 = 345,901.32/x
  3. Step 3: Cross multiply
    878,670.99x = 1,317,501.81 × 345,901.32
  4. Step 4: Simplify right side
    878,670.99x = 455,725,615,181.39
  5. Step 5: Solve for x
    x = 455,725,615,181.39/878,670.99
  6. Step 6: Final answer
    x = 518,653.31

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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.