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Finding the Fourth Proportional to 692,475.54, 955,589.58 and 420,554.91

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Solution

The fourth proportional to 692,475.54, 955,589.58 and 420,554.91 is: 580,349.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,475.54 : 955,589.58 = 420,554.91 : x
  2. Step 2: Convert to fraction form
    692,475.54/955,589.58 = 420,554.91/x
  3. Step 3: Cross multiply
    692,475.54x = 955,589.58 × 420,554.91
  4. Step 4: Simplify right side
    692,475.54x = 401,877,889,813.84
  5. Step 5: Solve for x
    x = 401,877,889,813.84/692,475.54
  6. Step 6: Final answer
    x = 580,349.58

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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.