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Finding the Fourth Proportional to 640,394.68, 883,746.07 and 350,010.90

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Solution

The fourth proportional to 640,394.68, 883,746.07 and 350,010.90 is: 483,015.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,394.68 : 883,746.07 = 350,010.90 : x
  2. Step 2: Convert to fraction form
    640,394.68/883,746.07 = 350,010.90/x
  3. Step 3: Cross multiply
    640,394.68x = 883,746.07 × 350,010.90
  4. Step 4: Simplify right side
    640,394.68x = 309,320,757,332.16
  5. Step 5: Solve for x
    x = 309,320,757,332.16/640,394.68
  6. Step 6: Final answer
    x = 483,015.81

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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.