Home / 690,816,084.98-953,786,365.47-408,649,172.63

Finding the Fourth Proportional to 690,816,084.98, 953,786,365.47 and 408,649,172.63

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Solution

The fourth proportional to 690,816,084.98, 953,786,365.47 and 408,649,172.63 is: 564,208,068.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,816,084.98 : 953,786,365.47 = 408,649,172.63 : x
  2. Step 2: Convert to fraction form
    690,816,084.98/953,786,365.47 = 408,649,172.63/x
  3. Step 3: Cross multiply
    690,816,084.98x = 953,786,365.47 × 408,649,172.63
  4. Step 4: Simplify right side
    690,816,084.98x = 389,764,009,110,321,408
  5. Step 5: Solve for x
    x = 389,764,009,110,321,408/690,816,084.98
  6. Step 6: Final answer
    x = 564,208,068.67

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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.