Home / 389,629.40-584,444.10-212,482.40

Finding the Fourth Proportional to 389,629.40, 584,444.10 and 212,482.40

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Solution

The fourth proportional to 389,629.40, 584,444.10 and 212,482.40 is: 318,723.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,629.40 : 584,444.10 = 212,482.40 : x
  2. Step 2: Convert to fraction form
    389,629.40/584,444.10 = 212,482.40/x
  3. Step 3: Cross multiply
    389,629.40x = 584,444.10 × 212,482.40
  4. Step 4: Simplify right side
    389,629.40x = 124,184,085,033.84
  5. Step 5: Solve for x
    x = 124,184,085,033.84/389,629.40
  6. Step 6: Final answer
    x = 318,723.60

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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.