Home / 1,308,210.40-1,962,315.60-860,312.80

Finding the Fourth Proportional to 1,308,210.40, 1,962,315.60 and 860,312.80

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Solution

The fourth proportional to 1,308,210.40, 1,962,315.60 and 860,312.80 is: 1,290,469.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308,210.40 : 1,962,315.60 = 860,312.80 : x
  2. Step 2: Convert to fraction form
    1,308,210.40/1,962,315.60 = 860,312.80/x
  3. Step 3: Cross multiply
    1,308,210.40x = 1,962,315.60 × 860,312.80
  4. Step 4: Simplify right side
    1,308,210.40x = 1,688,205,228,319.68
  5. Step 5: Solve for x
    x = 1,688,205,228,319.68/1,308,210.40
  6. Step 6: Final answer
    x = 1,290,469.20

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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.