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Finding the Fourth Proportional to 640,462.80, 883,841.52 and 350,080.32

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Solution

The fourth proportional to 640,462.80, 883,841.52 and 350,080.32 is: 483,112.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,462.80 : 883,841.52 = 350,080.32 : x
  2. Step 2: Convert to fraction form
    640,462.80/883,841.52 = 350,080.32/x
  3. Step 3: Cross multiply
    640,462.80x = 883,841.52 × 350,080.32
  4. Step 4: Simplify right side
    640,462.80x = 309,415,522,150.89
  5. Step 5: Solve for x
    x = 309,415,522,150.89/640,462.80
  6. Step 6: Final answer
    x = 483,112.40

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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.