Home / 665,024,653.20-997,536,979.80-420,136,640.40

Finding the Fourth Proportional to 665,024,653.20, 997,536,979.80 and 420,136,640.40

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Solution

The fourth proportional to 665,024,653.20, 997,536,979.80 and 420,136,640.40 is: 630,204,960.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,024,653.20 : 997,536,979.80 = 420,136,640.40 : x
  2. Step 2: Convert to fraction form
    665,024,653.20/997,536,979.80 = 420,136,640.40/x
  3. Step 3: Cross multiply
    665,024,653.20x = 997,536,979.80 × 420,136,640.40
  4. Step 4: Simplify right side
    665,024,653.20x = 419,101,835,367,934,592
  5. Step 5: Solve for x
    x = 419,101,835,367,934,592/665,024,653.20
  6. Step 6: Final answer
    x = 630,204,960.60

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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.