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Finding the Fourth Proportional to 830,649.60, 1,246,557.60 and 357,674.40

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Solution

The fourth proportional to 830,649.60, 1,246,557.60 and 357,674.40 is: 536,762.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,649.60 : 1,246,557.60 = 357,674.40 : x
  2. Step 2: Convert to fraction form
    830,649.60/1,246,557.60 = 357,674.40/x
  3. Step 3: Cross multiply
    830,649.60x = 1,246,557.60 × 357,674.40
  4. Step 4: Simplify right side
    830,649.60x = 445,861,741,645.44
  5. Step 5: Solve for x
    x = 445,861,741,645.44/830,649.60
  6. Step 6: Final answer
    x = 536,762.72

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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.