Home / 698,864.80-1,048,297.20-687,200.80

Finding the Fourth Proportional to 698,864.80, 1,048,297.20 and 687,200.80

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Solution

The fourth proportional to 698,864.80, 1,048,297.20 and 687,200.80 is: 1,030,801.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,864.80 : 1,048,297.20 = 687,200.80 : x
  2. Step 2: Convert to fraction form
    698,864.80/1,048,297.20 = 687,200.80/x
  3. Step 3: Cross multiply
    698,864.80x = 1,048,297.20 × 687,200.80
  4. Step 4: Simplify right side
    698,864.80x = 720,390,674,477.76
  5. Step 5: Solve for x
    x = 720,390,674,477.76/698,864.80
  6. Step 6: Final answer
    x = 1,030,801.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.