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Finding the Fourth Proportional to 722,775.65, 997,429.43 and 400,506.62

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Solution

The fourth proportional to 722,775.65, 997,429.43 and 400,506.62 is: 552,698.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,775.65 : 997,429.43 = 400,506.62 : x
  2. Step 2: Convert to fraction form
    722,775.65/997,429.43 = 400,506.62/x
  3. Step 3: Cross multiply
    722,775.65x = 997,429.43 × 400,506.62
  4. Step 4: Simplify right side
    722,775.65x = 399,477,087,695.29
  5. Step 5: Solve for x
    x = 399,477,087,695.29/722,775.65
  6. Step 6: Final answer
    x = 552,698.60

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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.