Home / 722,210.63-996,638.40-399,913.81

Finding the Fourth Proportional to 722,210.63, 996,638.40 and 399,913.81

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Solution

The fourth proportional to 722,210.63, 996,638.40 and 399,913.81 is: 551,874.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,210.63 : 996,638.40 = 399,913.81 : x
  2. Step 2: Convert to fraction form
    722,210.63/996,638.40 = 399,913.81/x
  3. Step 3: Cross multiply
    722,210.63x = 996,638.40 × 399,913.81
  4. Step 4: Simplify right side
    722,210.63x = 398,569,457,244.71
  5. Step 5: Solve for x
    x = 398,569,457,244.71/722,210.63
  6. Step 6: Final answer
    x = 551,874.26

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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.