Home / 666,230,739.13-919,427,145.64-368,872,971.98

Finding the Fourth Proportional to 666,230,739.13, 919,427,145.64 and 368,872,971.98

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Solution

The fourth proportional to 666,230,739.13, 919,427,145.64 and 368,872,971.98 is: 509,060,605.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,230,739.13 : 919,427,145.64 = 368,872,971.98 : x
  2. Step 2: Convert to fraction form
    666,230,739.13/919,427,145.64 = 368,872,971.98/x
  3. Step 3: Cross multiply
    666,230,739.13x = 919,427,145.64 × 368,872,971.98
  4. Step 4: Simplify right side
    666,230,739.13x = 339,151,823,731,315,136
  5. Step 5: Solve for x
    x = 339,151,823,731,315,136/666,230,739.13
  6. Step 6: Final answer
    x = 509,060,605.90

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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.