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Finding the Fourth Proportional to 560,415.40, 840,623.10 and 493,930.60

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Solution

The fourth proportional to 560,415.40, 840,623.10 and 493,930.60 is: 740,895.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,415.40 : 840,623.10 = 493,930.60 : x
  2. Step 2: Convert to fraction form
    560,415.40/840,623.10 = 493,930.60/x
  3. Step 3: Cross multiply
    560,415.40x = 840,623.10 × 493,930.60
  4. Step 4: Simplify right side
    560,415.40x = 415,209,472,156.86
  5. Step 5: Solve for x
    x = 415,209,472,156.86/560,415.40
  6. Step 6: Final answer
    x = 740,895.90

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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.