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Finding the Fourth Proportional to 640,226.42, 883,510.64 and 353,744.48

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Solution

The fourth proportional to 640,226.42, 883,510.64 and 353,744.48 is: 488,166.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,226.42 : 883,510.64 = 353,744.48 : x
  2. Step 2: Convert to fraction form
    640,226.42/883,510.64 = 353,744.48/x
  3. Step 3: Cross multiply
    640,226.42x = 883,510.64 × 353,744.48
  4. Step 4: Simplify right side
    640,226.42x = 312,537,011,921.27
  5. Step 5: Solve for x
    x = 312,537,011,921.27/640,226.42
  6. Step 6: Final answer
    x = 488,166.38

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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.