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Finding the Fourth Proportional to 722,372.91, 995,929.29 and 621,482.06

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Solution

The fourth proportional to 722,372.91, 995,929.29 and 621,482.06 is: 856,831.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,372.91 : 995,929.29 = 621,482.06 : x
  2. Step 2: Convert to fraction form
    722,372.91/995,929.29 = 621,482.06/x
  3. Step 3: Cross multiply
    722,372.91x = 995,929.29 × 621,482.06
  4. Step 4: Simplify right side
    722,372.91x = 618,952,181,783.89
  5. Step 5: Solve for x
    x = 618,952,181,783.89/722,372.91
  6. Step 6: Final answer
    x = 856,831.94

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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.