Home / 7,106,389.23-10,659,585.72-1,989,572.80

Finding the Fourth Proportional to 7,106,389.23, 10,659,585.72 and 1,989,572.80

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Solution

The fourth proportional to 7,106,389.23, 10,659,585.72 and 1,989,572.80 is: 2,984,359.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,106,389.23 : 10,659,585.72 = 1,989,572.80 : x
  2. Step 2: Convert to fraction form
    7,106,389.23/10,659,585.72 = 1,989,572.80/x
  3. Step 3: Cross multiply
    7,106,389.23x = 10,659,585.72 × 1,989,572.80
  4. Step 4: Simplify right side
    7,106,389.23x = 21,208,021,807,780.42
  5. Step 5: Solve for x
    x = 21,208,021,807,780.42/7,106,389.23
  6. Step 6: Final answer
    x = 2,984,359.72

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Double scale
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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.