Home / 640,560.02-883,973.04-354,080.06

Finding the Fourth Proportional to 640,560.02, 883,973.04 and 354,080.06

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Solution

The fourth proportional to 640,560.02, 883,973.04 and 354,080.06 is: 488,630.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,560.02 : 883,973.04 = 354,080.06 : x
  2. Step 2: Convert to fraction form
    640,560.02/883,973.04 = 354,080.06/x
  3. Step 3: Cross multiply
    640,560.02x = 883,973.04 × 354,080.06
  4. Step 4: Simplify right side
    640,560.02x = 312,997,227,041.58
  5. Step 5: Solve for x
    x = 312,997,227,041.58/640,560.02
  6. Step 6: Final answer
    x = 488,630.60

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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.