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Finding the Fourth Proportional to 659,736,348.78, 910,411,219 and 366,399,812.46

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Solution

The fourth proportional to 659,736,348.78, 910,411,219 and 366,399,812.46 is: 505,617,888.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,736,348.78 : 910,411,219 = 366,399,812.46 : x
  2. Step 2: Convert to fraction form
    659,736,348.78/910,411,219 = 366,399,812.46/x
  3. Step 3: Cross multiply
    659,736,348.78x = 910,411,219 × 366,399,812.46
  4. Step 4: Simplify right side
    659,736,348.78x = 333,574,499,903,080,000
  5. Step 5: Solve for x
    x = 333,574,499,903,080,000/659,736,348.78
  6. Step 6: Final answer
    x = 505,617,888.90

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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.