Home / 912,352.80-1,368,399.60-281,330.40

Finding the Fourth Proportional to 912,352.80, 1,368,399.60 and 281,330.40

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Solution

The fourth proportional to 912,352.80, 1,368,399.60 and 281,330.40 is: 421,955.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,352.80 : 1,368,399.60 = 281,330.40 : x
  2. Step 2: Convert to fraction form
    912,352.80/1,368,399.60 = 281,330.40/x
  3. Step 3: Cross multiply
    912,352.80x = 1,368,399.60 × 281,330.40
  4. Step 4: Simplify right side
    912,352.80x = 384,972,406,827.84
  5. Step 5: Solve for x
    x = 384,972,406,827.84/912,352.80
  6. Step 6: Final answer
    x = 421,955.64

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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.