Home / 779,807.71-1,076,134.62-422,111.71

Finding the Fourth Proportional to 779,807.71, 1,076,134.62 and 422,111.71

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Solution

The fourth proportional to 779,807.71, 1,076,134.62 and 422,111.71 is: 582,514.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,807.71 : 1,076,134.62 = 422,111.71 : x
  2. Step 2: Convert to fraction form
    779,807.71/1,076,134.62 = 422,111.71/x
  3. Step 3: Cross multiply
    779,807.71x = 1,076,134.62 × 422,111.71
  4. Step 4: Simplify right side
    779,807.71x = 454,249,024,638.40
  5. Step 5: Solve for x
    x = 454,249,024,638.40/779,807.71
  6. Step 6: Final answer
    x = 582,514.15

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1.5x scale

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.