Home / 7,418,999.80-11,128,499.70-6,143,541.40

Finding the Fourth Proportional to 7,418,999.80, 11,128,499.70 and 6,143,541.40

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Solution

The fourth proportional to 7,418,999.80, 11,128,499.70 and 6,143,541.40 is: 9,215,312.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,418,999.80 : 11,128,499.70 = 6,143,541.40 : x
  2. Step 2: Convert to fraction form
    7,418,999.80/11,128,499.70 = 6,143,541.40/x
  3. Step 3: Cross multiply
    7,418,999.80x = 11,128,499.70 × 6,143,541.40
  4. Step 4: Simplify right side
    7,418,999.80x = 68,368,398,626,837.58
  5. Step 5: Solve for x
    x = 68,368,398,626,837.58/7,418,999.80
  6. Step 6: Final answer
    x = 9,215,312.10

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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.