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Finding the Fourth Proportional to 557,344.32, 769,182.60 and 315,669.88

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Solution

The fourth proportional to 557,344.32, 769,182.60 and 315,669.88 is: 435,651.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,344.32 : 769,182.60 = 315,669.88 : x
  2. Step 2: Convert to fraction form
    557,344.32/769,182.60 = 315,669.88/x
  3. Step 3: Cross multiply
    557,344.32x = 769,182.60 × 315,669.88
  4. Step 4: Simplify right side
    557,344.32x = 242,807,779,040.09
  5. Step 5: Solve for x
    x = 242,807,779,040.09/557,344.32
  6. Step 6: Final answer
    x = 435,651.30

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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.