Home / 640,952.38-884,416.02-368,967.72

Finding the Fourth Proportional to 640,952.38, 884,416.02 and 368,967.72

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Solution

The fourth proportional to 640,952.38, 884,416.02 and 368,967.72 is: 509,118.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,952.38 : 884,416.02 = 368,967.72 : x
  2. Step 2: Convert to fraction form
    640,952.38/884,416.02 = 368,967.72/x
  3. Step 3: Cross multiply
    640,952.38x = 884,416.02 × 368,967.72
  4. Step 4: Simplify right side
    640,952.38x = 326,320,962,430.87
  5. Step 5: Solve for x
    x = 326,320,962,430.87/640,952.38
  6. Step 6: Final answer
    x = 509,118.89

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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.