Home / 671,424.60-1,007,136.90-638,765.40

Finding the Fourth Proportional to 671,424.60, 1,007,136.90 and 638,765.40

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Solution

The fourth proportional to 671,424.60, 1,007,136.90 and 638,765.40 is: 958,148.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,424.60 : 1,007,136.90 = 638,765.40 : x
  2. Step 2: Convert to fraction form
    671,424.60/1,007,136.90 = 638,765.40/x
  3. Step 3: Cross multiply
    671,424.60x = 1,007,136.90 × 638,765.40
  4. Step 4: Simplify right side
    671,424.60x = 643,324,204,783.26
  5. Step 5: Solve for x
    x = 643,324,204,783.26/671,424.60
  6. Step 6: Final answer
    x = 958,148.10

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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.