Home / 640,192.07-883,482.87-353,730.62

Finding the Fourth Proportional to 640,192.07, 883,482.87 and 353,730.62

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Solution

The fourth proportional to 640,192.07, 883,482.87 and 353,730.62 is: 488,158.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,192.07 : 883,482.87 = 353,730.62 : x
  2. Step 2: Convert to fraction form
    640,192.07/883,482.87 = 353,730.62/x
  3. Step 3: Cross multiply
    640,192.07x = 883,482.87 × 353,730.62
  4. Step 4: Simplify right side
    640,192.07x = 312,514,940,273.56
  5. Step 5: Solve for x
    x = 312,514,940,273.56/640,192.07
  6. Step 6: Final answer
    x = 488,158.10

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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.