Home / 722,780.40-997,435.98-400,511.37

Finding the Fourth Proportional to 722,780.40, 997,435.98 and 400,511.37

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Solution

The fourth proportional to 722,780.40, 997,435.98 and 400,511.37 is: 552,705.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,780.40 : 997,435.98 = 400,511.37 : x
  2. Step 2: Convert to fraction form
    722,780.40/997,435.98 = 400,511.37/x
  3. Step 3: Cross multiply
    722,780.40x = 997,435.98 × 400,511.37
  4. Step 4: Simplify right side
    722,780.40x = 399,484,450,837.09
  5. Step 5: Solve for x
    x = 399,484,450,837.09/722,780.40
  6. Step 6: Final answer
    x = 552,705.15

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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.