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Finding the Fourth Proportional to 549,213.42, 757,849.70 and 316,637.74

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Solution

The fourth proportional to 549,213.42, 757,849.70 and 316,637.74 is: 436,922.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,213.42 : 757,849.70 = 316,637.74 : x
  2. Step 2: Convert to fraction form
    549,213.42/757,849.70 = 316,637.74/x
  3. Step 3: Cross multiply
    549,213.42x = 757,849.70 × 316,637.74
  4. Step 4: Simplify right side
    549,213.42x = 239,963,816,267.68
  5. Step 5: Solve for x
    x = 239,963,816,267.68/549,213.42
  6. Step 6: Final answer
    x = 436,922.71

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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.