Home / 640,983.24-884,552.40-354,492.72

Finding the Fourth Proportional to 640,983.24, 884,552.40 and 354,492.72

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Solution

The fourth proportional to 640,983.24, 884,552.40 and 354,492.72 is: 489,197.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,983.24 : 884,552.40 = 354,492.72 : x
  2. Step 2: Convert to fraction form
    640,983.24/884,552.40 = 354,492.72/x
  3. Step 3: Cross multiply
    640,983.24x = 884,552.40 × 354,492.72
  4. Step 4: Simplify right side
    640,983.24x = 313,567,386,258.53
  5. Step 5: Solve for x
    x = 313,567,386,258.53/640,983.24
  6. Step 6: Final answer
    x = 489,197.48

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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.