Home / 840,237,188.84-1,159,628,998.18-478,219,171.16

Finding the Fourth Proportional to 840,237,188.84, 1,159,628,998.18 and 478,219,171.16

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Solution

The fourth proportional to 840,237,188.84, 1,159,628,998.18 and 478,219,171.16 is: 660,000,325.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,237,188.84 : 1,159,628,998.18 = 478,219,171.16 : x
  2. Step 2: Convert to fraction form
    840,237,188.84/1,159,628,998.18 = 478,219,171.16/x
  3. Step 3: Cross multiply
    840,237,188.84x = 1,159,628,998.18 × 478,219,171.16
  4. Step 4: Simplify right side
    840,237,188.84x = 554,556,818,365,412,416
  5. Step 5: Solve for x
    x = 554,556,818,365,412,416/840,237,188.84
  6. Step 6: Final answer
    x = 660,000,325.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.