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Finding the Fourth Proportional to 499,543.60, 749,315.40 and 347,328.40

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Solution

The fourth proportional to 499,543.60, 749,315.40 and 347,328.40 is: 520,992.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,543.60 : 749,315.40 = 347,328.40 : x
  2. Step 2: Convert to fraction form
    499,543.60/749,315.40 = 347,328.40/x
  3. Step 3: Cross multiply
    499,543.60x = 749,315.40 × 347,328.40
  4. Step 4: Simplify right side
    499,543.60x = 260,258,518,977.36
  5. Step 5: Solve for x
    x = 260,258,518,977.36/499,543.60
  6. Step 6: Final answer
    x = 520,992.60

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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.