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Finding the Fourth Proportional to 659,886,000.90, 990,466,730.55 and 401,605,674.90

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Solution

The fourth proportional to 659,886,000.90, 990,466,730.55 and 401,605,674.90 is: 602,796,633.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,886,000.90 : 990,466,730.55 = 401,605,674.90 : x
  2. Step 2: Convert to fraction form
    659,886,000.90/990,466,730.55 = 401,605,674.90/x
  3. Step 3: Cross multiply
    659,886,000.90x = 990,466,730.55 × 401,605,674.90
  4. Step 4: Simplify right side
    659,886,000.90x = 397,777,059,788,529,152
  5. Step 5: Solve for x
    x = 397,777,059,788,529,152/659,886,000.90
  6. Step 6: Final answer
    x = 602,796,633.43

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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.