Home / 659,885,711.40-990,466,296.30-401,605,385.40

Finding the Fourth Proportional to 659,885,711.40, 990,466,296.30 and 401,605,385.40

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Solution

The fourth proportional to 659,885,711.40, 990,466,296.30 and 401,605,385.40 is: 602,796,199.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,885,711.40 : 990,466,296.30 = 401,605,385.40 : x
  2. Step 2: Convert to fraction form
    659,885,711.40/990,466,296.30 = 401,605,385.40/x
  3. Step 3: Cross multiply
    659,885,711.40x = 990,466,296.30 × 401,605,385.40
  4. Step 4: Simplify right side
    659,885,711.40x = 397,776,598,651,272,064
  5. Step 5: Solve for x
    x = 397,776,598,651,272,064/659,885,711.40
  6. Step 6: Final answer
    x = 602,796,199.07

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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.