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Finding the Fourth Proportional to 662,145.17, 993,212.55 and 438,506.46

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Solution

The fourth proportional to 662,145.17, 993,212.55 and 438,506.46 is: 657,756.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,145.17 : 993,212.55 = 438,506.46 : x
  2. Step 2: Convert to fraction form
    662,145.17/993,212.55 = 438,506.46/x
  3. Step 3: Cross multiply
    662,145.17x = 993,212.55 × 438,506.46
  4. Step 4: Simplify right side
    662,145.17x = 435,530,119,328.07
  5. Step 5: Solve for x
    x = 435,530,119,328.07/662,145.17
  6. Step 6: Final answer
    x = 657,756.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.