Home / 1,187,999.10-1,778,499.45-1,118,792.70

Finding the Fourth Proportional to 1,187,999.10, 1,778,499.45 and 1,118,792.70

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Solution

The fourth proportional to 1,187,999.10, 1,778,499.45 and 1,118,792.70 is: 1,674,893.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,999.10 : 1,778,499.45 = 1,118,792.70 : x
  2. Step 2: Convert to fraction form
    1,187,999.10/1,778,499.45 = 1,118,792.70/x
  3. Step 3: Cross multiply
    1,187,999.10x = 1,778,499.45 × 1,118,792.70
  4. Step 4: Simplify right side
    1,187,999.10x = 1,989,772,201,614.02
  5. Step 5: Solve for x
    x = 1,989,772,201,614.02/1,187,999.10
  6. Step 6: Final answer
    x = 1,674,893.69

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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.