Home / 860,157.90-1,289,799.45-505,280.70

Finding the Fourth Proportional to 860,157.90, 1,289,799.45 and 505,280.70

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Solution

The fourth proportional to 860,157.90, 1,289,799.45 and 505,280.70 is: 757,664.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,157.90 : 1,289,799.45 = 505,280.70 : x
  2. Step 2: Convert to fraction form
    860,157.90/1,289,799.45 = 505,280.70/x
  3. Step 3: Cross multiply
    860,157.90x = 1,289,799.45 × 505,280.70
  4. Step 4: Simplify right side
    860,157.90x = 651,710,768,955.62
  5. Step 5: Solve for x
    x = 651,710,768,955.62/860,157.90
  6. Step 6: Final answer
    x = 757,664.11

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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.