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Finding the Fourth Proportional to 557,636.79, 769,527.68 and 302,989.80

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Solution

The fourth proportional to 557,636.79, 769,527.68 and 302,989.80 is: 418,119.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,636.79 : 769,527.68 = 302,989.80 : x
  2. Step 2: Convert to fraction form
    557,636.79/769,527.68 = 302,989.80/x
  3. Step 3: Cross multiply
    557,636.79x = 769,527.68 × 302,989.80
  4. Step 4: Simplify right side
    557,636.79x = 233,159,034,767.50
  5. Step 5: Solve for x
    x = 233,159,034,767.50/557,636.79
  6. Step 6: Final answer
    x = 418,119.90

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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.