Home / 1,210,516.20-1,811,108.70-790,612.20

Finding the Fourth Proportional to 1,210,516.20, 1,811,108.70 and 790,612.20

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Solution

The fourth proportional to 1,210,516.20, 1,811,108.70 and 790,612.20 is: 1,182,871.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,516.20 : 1,811,108.70 = 790,612.20 : x
  2. Step 2: Convert to fraction form
    1,210,516.20/1,811,108.70 = 790,612.20/x
  3. Step 3: Cross multiply
    1,210,516.20x = 1,811,108.70 × 790,612.20
  4. Step 4: Simplify right side
    1,210,516.20x = 1,431,884,633,746.14
  5. Step 5: Solve for x
    x = 1,431,884,633,746.14/1,210,516.20
  6. Step 6: Final answer
    x = 1,182,871.10

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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.