Home / 787,256.40-1,180,999.80-413,307.60

Finding the Fourth Proportional to 787,256.40, 1,180,999.80 and 413,307.60

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Solution

The fourth proportional to 787,256.40, 1,180,999.80 and 413,307.60 is: 620,021.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,256.40 : 1,180,999.80 = 413,307.60 : x
  2. Step 2: Convert to fraction form
    787,256.40/1,180,999.80 = 413,307.60/x
  3. Step 3: Cross multiply
    787,256.40x = 1,180,999.80 × 413,307.60
  4. Step 4: Simplify right side
    787,256.40x = 488,116,192,938.48
  5. Step 5: Solve for x
    x = 488,116,192,938.48/787,256.40
  6. Step 6: Final answer
    x = 620,021.88

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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.