Home / 611,923,867.20-917,885,800.80-490,991,515.20

Finding the Fourth Proportional to 611,923,867.20, 917,885,800.80 and 490,991,515.20

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Solution

The fourth proportional to 611,923,867.20, 917,885,800.80 and 490,991,515.20 is: 736,487,272.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,923,867.20 : 917,885,800.80 = 490,991,515.20 : x
  2. Step 2: Convert to fraction form
    611,923,867.20/917,885,800.80 = 490,991,515.20/x
  3. Step 3: Cross multiply
    611,923,867.20x = 917,885,800.80 × 490,991,515.20
  4. Step 4: Simplify right side
    611,923,867.20x = 450,674,140,115,357,312
  5. Step 5: Solve for x
    x = 450,674,140,115,357,312/611,923,867.20
  6. Step 6: Final answer
    x = 736,487,272.80

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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.