Home / 971,331.40-1,456,559.70-438,578.20

Finding the Fourth Proportional to 971,331.40, 1,456,559.70 and 438,578.20

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Solution

The fourth proportional to 971,331.40, 1,456,559.70 and 438,578.20 is: 657,669.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    971,331.40 : 1,456,559.70 = 438,578.20 : x
  2. Step 2: Convert to fraction form
    971,331.40/1,456,559.70 = 438,578.20/x
  3. Step 3: Cross multiply
    971,331.40x = 1,456,559.70 × 438,578.20
  4. Step 4: Simplify right side
    971,331.40x = 638,815,331,418.54
  5. Step 5: Solve for x
    x = 638,815,331,418.54/971,331.40
  6. Step 6: Final answer
    x = 657,669.80

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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.