Home / 763,412.60-1,144,139.70-426,452.60

Finding the Fourth Proportional to 763,412.60, 1,144,139.70 and 426,452.60

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Solution

The fourth proportional to 763,412.60, 1,144,139.70 and 426,452.60 is: 639,131.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,412.60 : 1,144,139.70 = 426,452.60 : x
  2. Step 2: Convert to fraction form
    763,412.60/1,144,139.70 = 426,452.60/x
  3. Step 3: Cross multiply
    763,412.60x = 1,144,139.70 × 426,452.60
  4. Step 4: Simplify right side
    763,412.60x = 487,921,349,828.22
  5. Step 5: Solve for x
    x = 487,921,349,828.22/763,412.60
  6. Step 6: Final answer
    x = 639,131.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.