Home / 915,716.68-1,263,818.10-507,909.22

Finding the Fourth Proportional to 915,716.68, 1,263,818.10 and 507,909.22

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Solution

The fourth proportional to 915,716.68, 1,263,818.10 and 507,909.22 is: 700,986.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,716.68 : 1,263,818.10 = 507,909.22 : x
  2. Step 2: Convert to fraction form
    915,716.68/1,263,818.10 = 507,909.22/x
  3. Step 3: Cross multiply
    915,716.68x = 1,263,818.10 × 507,909.22
  4. Step 4: Simplify right side
    915,716.68x = 641,904,865,392.88
  5. Step 5: Solve for x
    x = 641,904,865,392.88/915,716.68
  6. Step 6: Final answer
    x = 700,986.32

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Double scale
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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.