Home / 761,848.20-1,143,009.23-312,605.60

Finding the Fourth Proportional to 761,848.20, 1,143,009.23 and 312,605.60

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Solution

The fourth proportional to 761,848.20, 1,143,009.23 and 312,605.60 is: 469,005.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,848.20 : 1,143,009.23 = 312,605.60 : x
  2. Step 2: Convert to fraction form
    761,848.20/1,143,009.23 = 312,605.60/x
  3. Step 3: Cross multiply
    761,848.20x = 1,143,009.23 × 312,605.60
  4. Step 4: Simplify right side
    761,848.20x = 357,311,078,871.61
  5. Step 5: Solve for x
    x = 357,311,078,871.61/761,848.20
  6. Step 6: Final answer
    x = 469,005.61

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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.