Home / 640,460.16-883,826.40-353,985.24

Finding the Fourth Proportional to 640,460.16, 883,826.40 and 353,985.24

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Solution

The fourth proportional to 640,460.16, 883,826.40 and 353,985.24 is: 488,494.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,460.16 : 883,826.40 = 353,985.24 : x
  2. Step 2: Convert to fraction form
    640,460.16/883,826.40 = 353,985.24/x
  3. Step 3: Cross multiply
    640,460.16x = 883,826.40 × 353,985.24
  4. Step 4: Simplify right side
    640,460.16x = 312,861,500,322.34
  5. Step 5: Solve for x
    x = 312,861,500,322.34/640,460.16
  6. Step 6: Final answer
    x = 488,494.87

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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.