Home / 679,608.80-1,018,538.40-413,086.40

Finding the Fourth Proportional to 679,608.80, 1,018,538.40 and 413,086.40

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Solution

The fourth proportional to 679,608.80, 1,018,538.40 and 413,086.40 is: 619,097.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,608.80 : 1,018,538.40 = 413,086.40 : x
  2. Step 2: Convert to fraction form
    679,608.80/1,018,538.40 = 413,086.40/x
  3. Step 3: Cross multiply
    679,608.80x = 1,018,538.40 × 413,086.40
  4. Step 4: Simplify right side
    679,608.80x = 420,744,360,917.76
  5. Step 5: Solve for x
    x = 420,744,360,917.76/679,608.80
  6. Step 6: Final answer
    x = 619,097.87

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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.