Home / 1,308,209.40-1,962,314.10-860,311.80

Finding the Fourth Proportional to 1,308,209.40, 1,962,314.10 and 860,311.80

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Solution

The fourth proportional to 1,308,209.40, 1,962,314.10 and 860,311.80 is: 1,290,467.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308,209.40 : 1,962,314.10 = 860,311.80 : x
  2. Step 2: Convert to fraction form
    1,308,209.40/1,962,314.10 = 860,311.80/x
  3. Step 3: Cross multiply
    1,308,209.40x = 1,962,314.10 × 860,311.80
  4. Step 4: Simplify right side
    1,308,209.40x = 1,688,201,975,536.38
  5. Step 5: Solve for x
    x = 1,688,201,975,536.38/1,308,209.40
  6. Step 6: Final answer
    x = 1,290,467.70

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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.