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Finding the Fourth Proportional to 560,438.40, 840,657.60 and 493,953.60

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Solution

The fourth proportional to 560,438.40, 840,657.60 and 493,953.60 is: 740,930.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,438.40 : 840,657.60 = 493,953.60 : x
  2. Step 2: Convert to fraction form
    560,438.40/840,657.60 = 493,953.60/x
  3. Step 3: Cross multiply
    560,438.40x = 840,657.60 × 493,953.60
  4. Step 4: Simplify right side
    560,438.40x = 415,245,847,887.36
  5. Step 5: Solve for x
    x = 415,245,847,887.36/560,438.40
  6. Step 6: Final answer
    x = 740,930.40

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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.