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Finding the Fourth Proportional to 556,922.40, 768,552.42 and 315,200.64

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Solution

The fourth proportional to 556,922.40, 768,552.42 and 315,200.64 is: 434,976.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,922.40 : 768,552.42 = 315,200.64 : x
  2. Step 2: Convert to fraction form
    556,922.40/768,552.42 = 315,200.64/x
  3. Step 3: Cross multiply
    556,922.40x = 768,552.42 × 315,200.64
  4. Step 4: Simplify right side
    556,922.40x = 242,248,214,657.55
  5. Step 5: Solve for x
    x = 242,248,214,657.55/556,922.40
  6. Step 6: Final answer
    x = 434,976.60

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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.