Home / 915,475.45-1,263,305.53-507,553.48

Finding the Fourth Proportional to 915,475.45, 1,263,305.53 and 507,553.48

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Solution

The fourth proportional to 915,475.45, 1,263,305.53 and 507,553.48 is: 700,395.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,475.45 : 1,263,305.53 = 507,553.48 : x
  2. Step 2: Convert to fraction form
    915,475.45/1,263,305.53 = 507,553.48/x
  3. Step 3: Cross multiply
    915,475.45x = 1,263,305.53 × 507,553.48
  4. Step 4: Simplify right side
    915,475.45x = 641,195,118,054.74
  5. Step 5: Solve for x
    x = 641,195,118,054.74/915,475.45
  6. Step 6: Final answer
    x = 700,395.75

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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.