Home / 640,582.16-883,964.95-354,085.16

Finding the Fourth Proportional to 640,582.16, 883,964.95 and 354,085.16

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Solution

The fourth proportional to 640,582.16, 883,964.95 and 354,085.16 is: 488,616.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,582.16 : 883,964.95 = 354,085.16 : x
  2. Step 2: Convert to fraction form
    640,582.16/883,964.95 = 354,085.16/x
  3. Step 3: Cross multiply
    640,582.16x = 883,964.95 × 354,085.16
  4. Step 4: Simplify right side
    640,582.16x = 312,998,865,450.10
  5. Step 5: Solve for x
    x = 312,998,865,450.10/640,582.16
  6. Step 6: Final answer
    x = 488,616.27

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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.