Home / 919,703.54-1,379,762.95-280,064.50

Finding the Fourth Proportional to 919,703.54, 1,379,762.95 and 280,064.50

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Solution

The fourth proportional to 919,703.54, 1,379,762.95 and 280,064.50 is: 420,159.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,703.54 : 1,379,762.95 = 280,064.50 : x
  2. Step 2: Convert to fraction form
    919,703.54/1,379,762.95 = 280,064.50/x
  3. Step 3: Cross multiply
    919,703.54x = 1,379,762.95 × 280,064.50
  4. Step 4: Simplify right side
    919,703.54x = 386,422,620,710.28
  5. Step 5: Solve for x
    x = 386,422,620,710.28/919,703.54
  6. Step 6: Final answer
    x = 420,159.98

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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.