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Finding the Fourth Proportional to 908,907.10, 1,363,347.85 and 410,270.30

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Solution

The fourth proportional to 908,907.10, 1,363,347.85 and 410,270.30 is: 615,399.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,907.10 : 1,363,347.85 = 410,270.30 : x
  2. Step 2: Convert to fraction form
    908,907.10/1,363,347.85 = 410,270.30/x
  3. Step 3: Cross multiply
    908,907.10x = 1,363,347.85 × 410,270.30
  4. Step 4: Simplify right side
    908,907.10x = 559,341,131,423.86
  5. Step 5: Solve for x
    x = 559,341,131,423.86/908,907.10
  6. Step 6: Final answer
    x = 615,399.67

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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.