Home / 722,895.34-997,583.39-400,604.78

Finding the Fourth Proportional to 722,895.34, 997,583.39 and 400,604.78

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Solution

The fourth proportional to 722,895.34, 997,583.39 and 400,604.78 is: 552,827.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,895.34 : 997,583.39 = 400,604.78 : x
  2. Step 2: Convert to fraction form
    722,895.34/997,583.39 = 400,604.78/x
  3. Step 3: Cross multiply
    722,895.34x = 997,583.39 × 400,604.78
  4. Step 4: Simplify right side
    722,895.34x = 399,636,674,482.60
  5. Step 5: Solve for x
    x = 399,636,674,482.60/722,895.34
  6. Step 6: Final answer
    x = 552,827.85

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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.