Home / 389,591,774.60-537,637,172.98-210,975,974.47

Finding the Fourth Proportional to 389,591,774.60, 537,637,172.98 and 210,975,974.47

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Solution

The fourth proportional to 389,591,774.60, 537,637,172.98 and 210,975,974.47 is: 291,147,128.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,591,774.60 : 537,637,172.98 = 210,975,974.47 : x
  2. Step 2: Convert to fraction form
    389,591,774.60/537,637,172.98 = 210,975,974.47/x
  3. Step 3: Cross multiply
    389,591,774.60x = 537,637,172.98 × 210,975,974.47
  4. Step 4: Simplify right side
    389,591,774.60x = 113,428,526,478,063,280
  5. Step 5: Solve for x
    x = 113,428,526,478,063,280/389,591,774.60
  6. Step 6: Final answer
    x = 291,147,128.54

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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.