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Finding the Fourth Proportional to 560,420.88, 773,383.32 and 305,777.40

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Solution

The fourth proportional to 560,420.88, 773,383.32 and 305,777.40 is: 421,974.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,420.88 : 773,383.32 = 305,777.40 : x
  2. Step 2: Convert to fraction form
    560,420.88/773,383.32 = 305,777.40/x
  3. Step 3: Cross multiply
    560,420.88x = 773,383.32 × 305,777.40
  4. Step 4: Simplify right side
    560,420.88x = 236,483,140,792.97
  5. Step 5: Solve for x
    x = 236,483,140,792.97/560,420.88
  6. Step 6: Final answer
    x = 421,974.18

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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.