Home / 806,777.40-1,208,999.70-357,130.20

Finding the Fourth Proportional to 806,777.40, 1,208,999.70 and 357,130.20

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Solution

The fourth proportional to 806,777.40, 1,208,999.70 and 357,130.20 is: 535,178.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,777.40 : 1,208,999.70 = 357,130.20 : x
  2. Step 2: Convert to fraction form
    806,777.40/1,208,999.70 = 357,130.20/x
  3. Step 3: Cross multiply
    806,777.40x = 1,208,999.70 × 357,130.20
  4. Step 4: Simplify right side
    806,777.40x = 431,770,304,660.94
  5. Step 5: Solve for x
    x = 431,770,304,660.94/806,777.40
  6. Step 6: Final answer
    x = 535,178.98

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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.