Home / 811,543.38-1,119,981.70-453,847.38

Finding the Fourth Proportional to 811,543.38, 1,119,981.70 and 453,847.38

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Solution

The fourth proportional to 811,543.38, 1,119,981.70 and 453,847.38 is: 626,338.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,543.38 : 1,119,981.70 = 453,847.38 : x
  2. Step 2: Convert to fraction form
    811,543.38/1,119,981.70 = 453,847.38/x
  3. Step 3: Cross multiply
    811,543.38x = 1,119,981.70 × 453,847.38
  4. Step 4: Simplify right side
    811,543.38x = 508,300,760,192.95
  5. Step 5: Solve for x
    x = 508,300,760,192.95/811,543.38
  6. Step 6: Final answer
    x = 626,338.37

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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.