Home / 1,278,887.74-1,917,916.38-425,730.23

Finding the Fourth Proportional to 1,278,887.74, 1,917,916.38 and 425,730.23

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Solution

The fourth proportional to 1,278,887.74, 1,917,916.38 and 425,730.23 is: 638,457.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,887.74 : 1,917,916.38 = 425,730.23 : x
  2. Step 2: Convert to fraction form
    1,278,887.74/1,917,916.38 = 425,730.23/x
  3. Step 3: Cross multiply
    1,278,887.74x = 1,917,916.38 × 425,730.23
  4. Step 4: Simplify right side
    1,278,887.74x = 816,514,979,180.77
  5. Step 5: Solve for x
    x = 816,514,979,180.77/1,278,887.74
  6. Step 6: Final answer
    x = 638,457.12

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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.