Home / 711,278.80-1,066,918.20-670,728.40

Finding the Fourth Proportional to 711,278.80, 1,066,918.20 and 670,728.40

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Solution

The fourth proportional to 711,278.80, 1,066,918.20 and 670,728.40 is: 1,006,092.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,278.80 : 1,066,918.20 = 670,728.40 : x
  2. Step 2: Convert to fraction form
    711,278.80/1,066,918.20 = 670,728.40/x
  3. Step 3: Cross multiply
    711,278.80x = 1,066,918.20 × 670,728.40
  4. Step 4: Simplify right side
    711,278.80x = 715,612,337,216.88
  5. Step 5: Solve for x
    x = 715,612,337,216.88/711,278.80
  6. Step 6: Final answer
    x = 1,006,092.60

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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.