Home / 878,372.51-1,212,020.01-496,259.87

Finding the Fourth Proportional to 878,372.51, 1,212,020.01 and 496,259.87

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Solution

The fourth proportional to 878,372.51, 1,212,020.01 and 496,259.87 is: 684,762.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,372.51 : 1,212,020.01 = 496,259.87 : x
  2. Step 2: Convert to fraction form
    878,372.51/1,212,020.01 = 496,259.87/x
  3. Step 3: Cross multiply
    878,372.51x = 1,212,020.01 × 496,259.87
  4. Step 4: Simplify right side
    878,372.51x = 601,476,886,539.90
  5. Step 5: Solve for x
    x = 601,476,886,539.90/878,372.51
  6. Step 6: Final answer
    x = 684,762.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.