Home / 1,223,705.51-1,688,743.64-672,416.72

Finding the Fourth Proportional to 1,223,705.51, 1,688,743.64 and 672,416.72

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Solution

The fourth proportional to 1,223,705.51, 1,688,743.64 and 672,416.72 is: 927,951.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,705.51 : 1,688,743.64 = 672,416.72 : x
  2. Step 2: Convert to fraction form
    1,223,705.51/1,688,743.64 = 672,416.72/x
  3. Step 3: Cross multiply
    1,223,705.51x = 1,688,743.64 × 672,416.72
  4. Step 4: Simplify right side
    1,223,705.51x = 1,135,539,459,329.66
  5. Step 5: Solve for x
    x = 1,135,539,459,329.66/1,223,705.51
  6. Step 6: Final answer
    x = 927,951.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.