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Finding the Fourth Proportional to 450,554.40, 621,756 and 259,562.88

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Solution

The fourth proportional to 450,554.40, 621,756 and 259,562.88 is: 358,191.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,554.40 : 621,756 = 259,562.88 : x
  2. Step 2: Convert to fraction form
    450,554.40/621,756 = 259,562.88/x
  3. Step 3: Cross multiply
    450,554.40x = 621,756 × 259,562.88
  4. Step 4: Simplify right side
    450,554.40x = 161,384,778,017.28
  5. Step 5: Solve for x
    x = 161,384,778,017.28/450,554.40
  6. Step 6: Final answer
    x = 358,191.55

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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.