Home / 651,073.40-976,464.30-427,999.40

Finding the Fourth Proportional to 651,073.40, 976,464.30 and 427,999.40

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Solution

The fourth proportional to 651,073.40, 976,464.30 and 427,999.40 is: 641,903.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,073.40 : 976,464.30 = 427,999.40 : x
  2. Step 2: Convert to fraction form
    651,073.40/976,464.30 = 427,999.40/x
  3. Step 3: Cross multiply
    651,073.40x = 976,464.30 × 427,999.40
  4. Step 4: Simplify right side
    651,073.40x = 417,926,134,521.42
  5. Step 5: Solve for x
    x = 417,926,134,521.42/651,073.40
  6. Step 6: Final answer
    x = 641,903.25

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.