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Finding the Fourth Proportional to 560,809.56, 773,890.20 and 319,069.56

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Solution

The fourth proportional to 560,809.56, 773,890.20 and 319,069.56 is: 440,300.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,809.56 : 773,890.20 = 319,069.56 : x
  2. Step 2: Convert to fraction form
    560,809.56/773,890.20 = 319,069.56/x
  3. Step 3: Cross multiply
    560,809.56x = 773,890.20 × 319,069.56
  4. Step 4: Simplify right side
    560,809.56x = 246,924,805,602.31
  5. Step 5: Solve for x
    x = 246,924,805,602.31/560,809.56
  6. Step 6: Final answer
    x = 440,300.64

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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.