Home / 419,781,938.40-629,938,328.40-247,258,418.40

Finding the Fourth Proportional to 419,781,938.40, 629,938,328.40 and 247,258,418.40

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Solution

The fourth proportional to 419,781,938.40, 629,938,328.40 and 247,258,418.40 is: 371,043,964.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,781,938.40 : 629,938,328.40 = 247,258,418.40 : x
  2. Step 2: Convert to fraction form
    419,781,938.40/629,938,328.40 = 247,258,418.40/x
  3. Step 3: Cross multiply
    419,781,938.40x = 629,938,328.40 × 247,258,418.40
  4. Step 4: Simplify right side
    419,781,938.40x = 155,757,554,769,723,808
  5. Step 5: Solve for x
    x = 155,757,554,769,723,808/419,781,938.40
  6. Step 6: Final answer
    x = 371,043,964.79

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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.