Home / 912,005.40-1,368,137.70-280,853.40

Finding the Fourth Proportional to 912,005.40, 1,368,137.70 and 280,853.40

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Solution

The fourth proportional to 912,005.40, 1,368,137.70 and 280,853.40 is: 421,320.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,005.40 : 1,368,137.70 = 280,853.40 : x
  2. Step 2: Convert to fraction form
    912,005.40/1,368,137.70 = 280,853.40/x
  3. Step 3: Cross multiply
    912,005.40x = 1,368,137.70 × 280,853.40
  4. Step 4: Simplify right side
    912,005.40x = 384,246,124,713.18
  5. Step 5: Solve for x
    x = 384,246,124,713.18/912,005.40
  6. Step 6: Final answer
    x = 421,320.01

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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.