Home / 644,926,586.60-966,770,564.70-213,883,207.40

Finding the Fourth Proportional to 644,926,586.60, 966,770,564.70 and 213,883,207.40

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Solution

The fourth proportional to 644,926,586.60, 966,770,564.70 and 213,883,207.40 is: 320,619,421.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,926,586.60 : 966,770,564.70 = 213,883,207.40 : x
  2. Step 2: Convert to fraction form
    644,926,586.60/966,770,564.70 = 213,883,207.40/x
  3. Step 3: Cross multiply
    644,926,586.60x = 966,770,564.70 × 213,883,207.40
  4. Step 4: Simplify right side
    644,926,586.60x = 206,775,989,197,945,248
  5. Step 5: Solve for x
    x = 206,775,989,197,945,248/644,926,586.60
  6. Step 6: Final answer
    x = 320,619,421.64

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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.