Home / 470,100.13-649,272.32-316,874.05

Finding the Fourth Proportional to 470,100.13, 649,272.32 and 316,874.05

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Solution

The fourth proportional to 470,100.13, 649,272.32 and 316,874.05 is: 437,646.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,100.13 : 649,272.32 = 316,874.05 : x
  2. Step 2: Convert to fraction form
    470,100.13/649,272.32 = 316,874.05/x
  3. Step 3: Cross multiply
    470,100.13x = 649,272.32 × 316,874.05
  4. Step 4: Simplify right side
    470,100.13x = 205,737,549,591.30
  5. Step 5: Solve for x
    x = 205,737,549,591.30/470,100.13
  6. Step 6: Final answer
    x = 437,646.23

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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.