Home / 860,280.89-1,290,423.38-261,246.55

Finding the Fourth Proportional to 860,280.89, 1,290,423.38 and 261,246.55

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Solution

The fourth proportional to 860,280.89, 1,290,423.38 and 261,246.55 is: 391,870.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,280.89 : 1,290,423.38 = 261,246.55 : x
  2. Step 2: Convert to fraction form
    860,280.89/1,290,423.38 = 261,246.55/x
  3. Step 3: Cross multiply
    860,280.89x = 1,290,423.38 × 261,246.55
  4. Step 4: Simplify right side
    860,280.89x = 337,118,658,330.49
  5. Step 5: Solve for x
    x = 337,118,658,330.49/860,280.89
  6. Step 6: Final answer
    x = 391,870.45

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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.