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Finding the Fourth Proportional to 1,079,784.92, 1,619,510.92 and 360,139.20

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Solution

The fourth proportional to 1,079,784.92, 1,619,510.92 and 360,139.20 is: 540,153.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079,784.92 : 1,619,510.92 = 360,139.20 : x
  2. Step 2: Convert to fraction form
    1,079,784.92/1,619,510.92 = 360,139.20/x
  3. Step 3: Cross multiply
    1,079,784.92x = 1,619,510.92 × 360,139.20
  4. Step 4: Simplify right side
    1,079,784.92x = 583,249,366,219.72
  5. Step 5: Solve for x
    x = 583,249,366,219.72/1,079,784.92
  6. Step 6: Final answer
    x = 540,153.28

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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.