Home / 640,042.02-883,259.64-353,554.74

Finding the Fourth Proportional to 640,042.02, 883,259.64 and 353,554.74

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Solution

The fourth proportional to 640,042.02, 883,259.64 and 353,554.74 is: 487,906.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,042.02 : 883,259.64 = 353,554.74 : x
  2. Step 2: Convert to fraction form
    640,042.02/883,259.64 = 353,554.74/x
  3. Step 3: Cross multiply
    640,042.02x = 883,259.64 × 353,554.74
  4. Step 4: Simplify right side
    640,042.02x = 312,280,632,372.69
  5. Step 5: Solve for x
    x = 312,280,632,372.69/640,042.02
  6. Step 6: Final answer
    x = 487,906.45

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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.