Home / 912,409.80-1,368,485.10-281,387.40

Finding the Fourth Proportional to 912,409.80, 1,368,485.10 and 281,387.40

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Solution

The fourth proportional to 912,409.80, 1,368,485.10 and 281,387.40 is: 422,041.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,409.80 : 1,368,485.10 = 281,387.40 : x
  2. Step 2: Convert to fraction form
    912,409.80/1,368,485.10 = 281,387.40/x
  3. Step 3: Cross multiply
    912,409.80x = 1,368,485.10 × 281,387.40
  4. Step 4: Simplify right side
    912,409.80x = 385,074,464,227.74
  5. Step 5: Solve for x
    x = 385,074,464,227.74/912,409.80
  6. Step 6: Final answer
    x = 422,041.13

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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.