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Finding the Fourth Proportional to 717,854.48, 990,639.24 and 416,223.44

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Solution

The fourth proportional to 717,854.48, 990,639.24 and 416,223.44 is: 574,388.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,854.48 : 990,639.24 = 416,223.44 : x
  2. Step 2: Convert to fraction form
    717,854.48/990,639.24 = 416,223.44/x
  3. Step 3: Cross multiply
    717,854.48x = 990,639.24 × 416,223.44
  4. Step 4: Simplify right side
    717,854.48x = 412,327,272,271.79
  5. Step 5: Solve for x
    x = 412,327,272,271.79/717,854.48
  6. Step 6: Final answer
    x = 574,388.38

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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.