Home / 860,210.28-1,290,365.64-261,190.98

Finding the Fourth Proportional to 860,210.28, 1,290,365.64 and 261,190.98

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Solution

The fourth proportional to 860,210.28, 1,290,365.64 and 261,190.98 is: 391,801.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,210.28 : 1,290,365.64 = 261,190.98 : x
  2. Step 2: Convert to fraction form
    860,210.28/1,290,365.64 = 261,190.98/x
  3. Step 3: Cross multiply
    860,210.28x = 1,290,365.64 × 261,190.98
  4. Step 4: Simplify right side
    860,210.28x = 337,031,866,069.93
  5. Step 5: Solve for x
    x = 337,031,866,069.93/860,210.28
  6. Step 6: Final answer
    x = 391,801.72

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1.5x scale

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.