Home / 1,131,304.34-1,561,206.12-666,178.40

Finding the Fourth Proportional to 1,131,304.34, 1,561,206.12 and 666,178.40

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Solution

The fourth proportional to 1,131,304.34, 1,561,206.12 and 666,178.40 is: 919,329.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,304.34 : 1,561,206.12 = 666,178.40 : x
  2. Step 2: Convert to fraction form
    1,131,304.34/1,561,206.12 = 666,178.40/x
  3. Step 3: Cross multiply
    1,131,304.34x = 1,561,206.12 × 666,178.40
  4. Step 4: Simplify right side
    1,131,304.34x = 1,040,041,795,091.81
  5. Step 5: Solve for x
    x = 1,040,041,795,091.81/1,131,304.34
  6. Step 6: Final answer
    x = 919,329.80

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.