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Finding the Fourth Proportional to 499,993.80, 747,803.70 and 447,068.40

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Solution

The fourth proportional to 499,993.80, 747,803.70 and 447,068.40 is: 668,647.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,993.80 : 747,803.70 = 447,068.40 : x
  2. Step 2: Convert to fraction form
    499,993.80/747,803.70 = 447,068.40/x
  3. Step 3: Cross multiply
    499,993.80x = 747,803.70 × 447,068.40
  4. Step 4: Simplify right side
    499,993.80x = 334,319,403,673.08
  5. Step 5: Solve for x
    x = 334,319,403,673.08/499,993.80
  6. Step 6: Final answer
    x = 668,647.10

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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.