Home / 915,715.68-1,263,816.72-507,908.22

Finding the Fourth Proportional to 915,715.68, 1,263,816.72 and 507,908.22

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Solution

The fourth proportional to 915,715.68, 1,263,816.72 and 507,908.22 is: 700,984.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,715.68 : 1,263,816.72 = 507,908.22 : x
  2. Step 2: Convert to fraction form
    915,715.68/1,263,816.72 = 507,908.22/x
  3. Step 3: Cross multiply
    915,715.68x = 1,263,816.72 × 507,908.22
  4. Step 4: Simplify right side
    915,715.68x = 641,902,900,661.44
  5. Step 5: Solve for x
    x = 641,902,900,661.44/915,715.68
  6. Step 6: Final answer
    x = 700,984.94

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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.