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Finding the Fourth Proportional to 879,133.68, 1,213,441.02 and 516,800.34

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Solution

The fourth proportional to 879,133.68, 1,213,441.02 and 516,800.34 is: 713,323.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,133.68 : 1,213,441.02 = 516,800.34 : x
  2. Step 2: Convert to fraction form
    879,133.68/1,213,441.02 = 516,800.34/x
  3. Step 3: Cross multiply
    879,133.68x = 1,213,441.02 × 516,800.34
  4. Step 4: Simplify right side
    879,133.68x = 627,106,731,705.95
  5. Step 5: Solve for x
    x = 627,106,731,705.95/879,133.68
  6. Step 6: Final answer
    x = 713,323.52

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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.