Home / 915,333.75-1,263,160.51-507,434.56

Finding the Fourth Proportional to 915,333.75, 1,263,160.51 and 507,434.56

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Solution

The fourth proportional to 915,333.75, 1,263,160.51 and 507,434.56 is: 700,259.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,333.75 : 1,263,160.51 = 507,434.56 : x
  2. Step 2: Convert to fraction form
    915,333.75/1,263,160.51 = 507,434.56/x
  3. Step 3: Cross multiply
    915,333.75x = 1,263,160.51 × 507,434.56
  4. Step 4: Simplify right side
    915,333.75x = 640,971,293,174.74
  5. Step 5: Solve for x
    x = 640,971,293,174.74/915,333.75
  6. Step 6: Final answer
    x = 700,259.65

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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.