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Finding the Fourth Proportional to 656,781.23, 906,357.53 and 354,975.23

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Solution

The fourth proportional to 656,781.23, 906,357.53 and 354,975.23 is: 489,865.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,781.23 : 906,357.53 = 354,975.23 : x
  2. Step 2: Convert to fraction form
    656,781.23/906,357.53 = 354,975.23/x
  3. Step 3: Cross multiply
    656,781.23x = 906,357.53 × 354,975.23
  4. Step 4: Simplify right side
    656,781.23x = 321,734,475,827.31
  5. Step 5: Solve for x
    x = 321,734,475,827.31/656,781.23
  6. Step 6: Final answer
    x = 489,865.51

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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.