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Finding the Fourth Proportional to 557,305.20, 769,316.48 and 376,262.24

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Solution

The fourth proportional to 557,305.20, 769,316.48 and 376,262.24 is: 519,400.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,305.20 : 769,316.48 = 376,262.24 : x
  2. Step 2: Convert to fraction form
    557,305.20/769,316.48 = 376,262.24/x
  3. Step 3: Cross multiply
    557,305.20x = 769,316.48 × 376,262.24
  4. Step 4: Simplify right side
    557,305.20x = 289,464,742,033.72
  5. Step 5: Solve for x
    x = 289,464,742,033.72/557,305.20
  6. Step 6: Final answer
    x = 519,400.76

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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.