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Finding the Fourth Proportional to 487,817.99, 672,741.56 and 418,884.04

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Solution

The fourth proportional to 487,817.99, 672,741.56 and 418,884.04 is: 577,675.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,817.99 : 672,741.56 = 418,884.04 : x
  2. Step 2: Convert to fraction form
    487,817.99/672,741.56 = 418,884.04/x
  3. Step 3: Cross multiply
    487,817.99x = 672,741.56 × 418,884.04
  4. Step 4: Simplify right side
    487,817.99x = 281,800,701,894.06
  5. Step 5: Solve for x
    x = 281,800,701,894.06/487,817.99
  6. Step 6: Final answer
    x = 577,675.92

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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.