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Finding the Fourth Proportional to 640,080.12, 883,337.40 and 368,148.08

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Solution

The fourth proportional to 640,080.12, 883,337.40 and 368,148.08 is: 508,059.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,080.12 : 883,337.40 = 368,148.08 : x
  2. Step 2: Convert to fraction form
    640,080.12/883,337.40 = 368,148.08/x
  3. Step 3: Cross multiply
    640,080.12x = 883,337.40 × 368,148.08
  4. Step 4: Simplify right side
    640,080.12x = 325,198,967,802.19
  5. Step 5: Solve for x
    x = 325,198,967,802.19/640,080.12
  6. Step 6: Final answer
    x = 508,059.78

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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.