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Finding the Fourth Proportional to 557,339.82, 769,130.28 and 302,685.54

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Solution

The fourth proportional to 557,339.82, 769,130.28 and 302,685.54 is: 417,706.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,339.82 : 769,130.28 = 302,685.54 : x
  2. Step 2: Convert to fraction form
    557,339.82/769,130.28 = 302,685.54/x
  3. Step 3: Cross multiply
    557,339.82x = 769,130.28 × 302,685.54
  4. Step 4: Simplify right side
    557,339.82x = 232,804,614,132.15
  5. Step 5: Solve for x
    x = 232,804,614,132.15/557,339.82
  6. Step 6: Final answer
    x = 417,706.77

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Double scale
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Similar ratio
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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.