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Finding the Fourth Proportional to 676,157.22, 933,097.32 and 421,509.42

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Solution

The fourth proportional to 676,157.22, 933,097.32 and 421,509.42 is: 581,683.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,157.22 : 933,097.32 = 421,509.42 : x
  2. Step 2: Convert to fraction form
    676,157.22/933,097.32 = 421,509.42/x
  3. Step 3: Cross multiply
    676,157.22x = 933,097.32 × 421,509.42
  4. Step 4: Simplify right side
    676,157.22x = 393,309,310,156.75
  5. Step 5: Solve for x
    x = 393,309,310,156.75/676,157.22
  6. Step 6: Final answer
    x = 581,683.22

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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.