Home / 659,885,999.40-990,466,728.30-401,605,673.40

Finding the Fourth Proportional to 659,885,999.40, 990,466,728.30 and 401,605,673.40

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Solution

The fourth proportional to 659,885,999.40, 990,466,728.30 and 401,605,673.40 is: 602,796,631.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,885,999.40 : 990,466,728.30 = 401,605,673.40 : x
  2. Step 2: Convert to fraction form
    659,885,999.40/990,466,728.30 = 401,605,673.40/x
  3. Step 3: Cross multiply
    659,885,999.40x = 990,466,728.30 × 401,605,673.40
  4. Step 4: Simplify right side
    659,885,999.40x = 397,777,057,399,216,320
  5. Step 5: Solve for x
    x = 397,777,057,399,216,320/659,885,999.40
  6. Step 6: Final answer
    x = 602,796,631.18

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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.