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Finding the Fourth Proportional to 659,617.70, 989,815.35 and 435,625.70

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Solution

The fourth proportional to 659,617.70, 989,815.35 and 435,625.70 is: 653,695.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,617.70 : 989,815.35 = 435,625.70 : x
  2. Step 2: Convert to fraction form
    659,617.70/989,815.35 = 435,625.70/x
  3. Step 3: Cross multiply
    659,617.70x = 989,815.35 × 435,625.70
  4. Step 4: Simplify right side
    659,617.70x = 431,189,004,714.50
  5. Step 5: Solve for x
    x = 431,189,004,714.50/659,617.70
  6. Step 6: Final answer
    x = 653,695.32

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1.5x scale

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.