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Finding the Fourth Proportional to 557,418.40, 769,246.32 and 302,769.76

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Solution

The fourth proportional to 557,418.40, 769,246.32 and 302,769.76 is: 417,827.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,418.40 : 769,246.32 = 302,769.76 : x
  2. Step 2: Convert to fraction form
    557,418.40/769,246.32 = 302,769.76/x
  3. Step 3: Cross multiply
    557,418.40x = 769,246.32 × 302,769.76
  4. Step 4: Simplify right side
    557,418.40x = 232,904,523,687.28
  5. Step 5: Solve for x
    x = 232,904,523,687.28/557,418.40
  6. Step 6: Final answer
    x = 417,827.12

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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.