Home / 722,890.40-997,594.53-400,605.85

Finding the Fourth Proportional to 722,890.40, 997,594.53 and 400,605.85

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Solution

The fourth proportional to 722,890.40, 997,594.53 and 400,605.85 is: 552,839.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,890.40 : 997,594.53 = 400,605.85 : x
  2. Step 2: Convert to fraction form
    722,890.40/997,594.53 = 400,605.85/x
  3. Step 3: Cross multiply
    722,890.40x = 997,594.53 × 400,605.85
  4. Step 4: Simplify right side
    722,890.40x = 399,642,199,658.03
  5. Step 5: Solve for x
    x = 399,642,199,658.03/722,890.40
  6. Step 6: Final answer
    x = 552,839.27

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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.