Home / 783,319,578.78-1,080,986,717.33-426,090,439.80

Finding the Fourth Proportional to 783,319,578.78, 1,080,986,717.33 and 426,090,439.80

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Solution

The fourth proportional to 783,319,578.78, 1,080,986,717.33 and 426,090,439.80 is: 588,007,906.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,319,578.78 : 1,080,986,717.33 = 426,090,439.80 : x
  2. Step 2: Convert to fraction form
    783,319,578.78/1,080,986,717.33 = 426,090,439.80/x
  3. Step 3: Cross multiply
    783,319,578.78x = 1,080,986,717.33 × 426,090,439.80
  4. Step 4: Simplify right side
    783,319,578.78x = 460,598,105,804,586,688
  5. Step 5: Solve for x
    x = 460,598,105,804,586,688/783,319,578.78
  6. Step 6: Final answer
    x = 588,007,906.71

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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.