Home / 1,190,128.50-1,784,813.66-391,225.90

Finding the Fourth Proportional to 1,190,128.50, 1,784,813.66 and 391,225.90

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Solution

The fourth proportional to 1,190,128.50, 1,784,813.66 and 391,225.90 is: 586,714.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190,128.50 : 1,784,813.66 = 391,225.90 : x
  2. Step 2: Convert to fraction form
    1,190,128.50/1,784,813.66 = 391,225.90/x
  3. Step 3: Cross multiply
    1,190,128.50x = 1,784,813.66 × 391,225.90
  4. Step 4: Simplify right side
    1,190,128.50x = 698,265,328,509.67
  5. Step 5: Solve for x
    x = 698,265,328,509.67/1,190,128.50
  6. Step 6: Final answer
    x = 586,714.23

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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.