Home / 1,213,510.80-1,820,011.05-613,908.30

Finding the Fourth Proportional to 1,213,510.80, 1,820,011.05 and 613,908.30

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Solution

The fourth proportional to 1,213,510.80, 1,820,011.05 and 613,908.30 is: 920,733.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,510.80 : 1,820,011.05 = 613,908.30 : x
  2. Step 2: Convert to fraction form
    1,213,510.80/1,820,011.05 = 613,908.30/x
  3. Step 3: Cross multiply
    1,213,510.80x = 1,820,011.05 × 613,908.30
  4. Step 4: Simplify right side
    1,213,510.80x = 1,117,319,889,686.72
  5. Step 5: Solve for x
    x = 1,117,319,889,686.72/1,213,510.80
  6. Step 6: Final answer
    x = 920,733.37

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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.