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Finding the Fourth Proportional to 640,077.60, 883,294.38 and 353,595

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Solution

The fourth proportional to 640,077.60, 883,294.38 and 353,595 is: 487,954.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,077.60 : 883,294.38 = 353,595 : x
  2. Step 2: Convert to fraction form
    640,077.60/883,294.38 = 353,595/x
  3. Step 3: Cross multiply
    640,077.60x = 883,294.38 × 353,595
  4. Step 4: Simplify right side
    640,077.60x = 312,328,476,296.10
  5. Step 5: Solve for x
    x = 312,328,476,296.10/640,077.60
  6. Step 6: Final answer
    x = 487,954.08

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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.