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Finding the Fourth Proportional to 560,722.88, 840,222.88 and 380,574.02

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Solution

The fourth proportional to 560,722.88, 840,222.88 and 380,574.02 is: 570,276.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,722.88 : 840,222.88 = 380,574.02 : x
  2. Step 2: Convert to fraction form
    560,722.88/840,222.88 = 380,574.02/x
  3. Step 3: Cross multiply
    560,722.88x = 840,222.88 × 380,574.02
  4. Step 4: Simplify right side
    560,722.88x = 319,766,999,137.58
  5. Step 5: Solve for x
    x = 319,766,999,137.58/560,722.88
  6. Step 6: Final answer
    x = 570,276.35

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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.