Home / 389,198,313,948.78-583,584,650,228.10-309,038,936,741.72

Finding the Fourth Proportional to 389,198,313,948.78, 583,584,650,228.10 and 309,038,936,741.72

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Solution

The fourth proportional to 389,198,313,948.78, 583,584,650,228.10 and 309,038,936,741.72 is: 463,389,417,018.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,198,313,948.78 : 583,584,650,228.10 = 309,038,936,741.72 : x
  2. Step 2: Convert to fraction form
    389,198,313,948.78/583,584,650,228.10 = 309,038,936,741.72/x
  3. Step 3: Cross multiply
    389,198,313,948.78x = 583,584,650,228.10 × 309,038,936,741.72
  4. Step 4: Simplify right side
    389,198,313,948.78x = 180,350,379,805,280,579,878,912
  5. Step 5: Solve for x
    x = 180,350,379,805,280,579,878,912/389,198,313,948.78
  6. Step 6: Final answer
    x = 463,389,417,018.43

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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.