Home / 1,188,007.10-1,778,511.45-1,118,800.70

Finding the Fourth Proportional to 1,188,007.10, 1,778,511.45 and 1,118,800.70

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Solution

The fourth proportional to 1,188,007.10, 1,778,511.45 and 1,118,800.70 is: 1,674,905.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,007.10 : 1,778,511.45 = 1,118,800.70 : x
  2. Step 2: Convert to fraction form
    1,188,007.10/1,778,511.45 = 1,118,800.70/x
  3. Step 3: Cross multiply
    1,188,007.10x = 1,778,511.45 × 1,118,800.70
  4. Step 4: Simplify right side
    1,188,007.10x = 1,989,799,855,218.02
  5. Step 5: Solve for x
    x = 1,989,799,855,218.02/1,188,007.10
  6. Step 6: Final answer
    x = 1,674,905.69

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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.