Home / 997,538.20-1,496,501.70-428,918.20

Finding the Fourth Proportional to 997,538.20, 1,496,501.70 and 428,918.20

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Solution

The fourth proportional to 997,538.20, 1,496,501.70 and 428,918.20 is: 643,460.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    997,538.20 : 1,496,501.70 = 428,918.20 : x
  2. Step 2: Convert to fraction form
    997,538.20/1,496,501.70 = 428,918.20/x
  3. Step 3: Cross multiply
    997,538.20x = 1,496,501.70 × 428,918.20
  4. Step 4: Simplify right side
    997,538.20x = 641,876,815,460.94
  5. Step 5: Solve for x
    x = 641,876,815,460.94/997,538.20
  6. Step 6: Final answer
    x = 643,460.89

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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.