Home / 611,923,871.70-917,885,807.55-490,991,519.70

Finding the Fourth Proportional to 611,923,871.70, 917,885,807.55 and 490,991,519.70

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Solution

The fourth proportional to 611,923,871.70, 917,885,807.55 and 490,991,519.70 is: 736,487,279.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,923,871.70 : 917,885,807.55 = 490,991,519.70 : x
  2. Step 2: Convert to fraction form
    611,923,871.70/917,885,807.55 = 490,991,519.70/x
  3. Step 3: Cross multiply
    611,923,871.70x = 917,885,807.55 × 490,991,519.70
  4. Step 4: Simplify right side
    611,923,871.70x = 450,674,147,560,036,224
  5. Step 5: Solve for x
    x = 450,674,147,560,036,224/611,923,871.70
  6. Step 6: Final answer
    x = 736,487,279.55

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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.