Home / 902,328.90-1,245,131.07-520,281.87

Finding the Fourth Proportional to 902,328.90, 1,245,131.07 and 520,281.87

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Solution

The fourth proportional to 902,328.90, 1,245,131.07 and 520,281.87 is: 717,941.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    902,328.90 : 1,245,131.07 = 520,281.87 : x
  2. Step 2: Convert to fraction form
    902,328.90/1,245,131.07 = 520,281.87/x
  3. Step 3: Cross multiply
    902,328.90x = 1,245,131.07 × 520,281.87
  4. Step 4: Simplify right side
    902,328.90x = 647,819,121,494.70
  5. Step 5: Solve for x
    x = 647,819,121,494.70/902,328.90
  6. Step 6: Final answer
    x = 717,941.23

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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.