Home / 1,115,746.60-1,673,619.90-689,621.80

Finding the Fourth Proportional to 1,115,746.60, 1,673,619.90 and 689,621.80

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Solution

The fourth proportional to 1,115,746.60, 1,673,619.90 and 689,621.80 is: 1,034,432.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,746.60 : 1,673,619.90 = 689,621.80 : x
  2. Step 2: Convert to fraction form
    1,115,746.60/1,673,619.90 = 689,621.80/x
  3. Step 3: Cross multiply
    1,115,746.60x = 1,673,619.90 × 689,621.80
  4. Step 4: Simplify right side
    1,115,746.60x = 1,154,164,767,953.82
  5. Step 5: Solve for x
    x = 1,154,164,767,953.82/1,115,746.60
  6. Step 6: Final answer
    x = 1,034,432.70

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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.