Home / 1,047,490.81-1,445,496.64-640,274.47

Finding the Fourth Proportional to 1,047,490.81, 1,445,496.64 and 640,274.47

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Solution

The fourth proportional to 1,047,490.81, 1,445,496.64 and 640,274.47 is: 883,553.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,047,490.81 : 1,445,496.64 = 640,274.47 : x
  2. Step 2: Convert to fraction form
    1,047,490.81/1,445,496.64 = 640,274.47/x
  3. Step 3: Cross multiply
    1,047,490.81x = 1,445,496.64 × 640,274.47
  4. Step 4: Simplify right side
    1,047,490.81x = 925,514,595,062.78
  5. Step 5: Solve for x
    x = 925,514,595,062.78/1,047,490.81
  6. Step 6: Final answer
    x = 883,553.90

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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.