Home / 412,201,520.10-618,302,280.15-139,572,287.10

Finding the Fourth Proportional to 412,201,520.10, 618,302,280.15 and 139,572,287.10

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Solution

The fourth proportional to 412,201,520.10, 618,302,280.15 and 139,572,287.10 is: 209,358,430.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,201,520.10 : 618,302,280.15 = 139,572,287.10 : x
  2. Step 2: Convert to fraction form
    412,201,520.10/618,302,280.15 = 139,572,287.10/x
  3. Step 3: Cross multiply
    412,201,520.10x = 618,302,280.15 × 139,572,287.10
  4. Step 4: Simplify right side
    412,201,520.10x = 86,297,863,359,680,432
  5. Step 5: Solve for x
    x = 86,297,863,359,680,432/412,201,520.10
  6. Step 6: Final answer
    x = 209,358,430.65

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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.