Home / 1,281,717.20-1,920,271.80-615,400.40

Finding the Fourth Proportional to 1,281,717.20, 1,920,271.80 and 615,400.40

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Solution

The fourth proportional to 1,281,717.20, 1,920,271.80 and 615,400.40 is: 921,994.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,717.20 : 1,920,271.80 = 615,400.40 : x
  2. Step 2: Convert to fraction form
    1,281,717.20/1,920,271.80 = 615,400.40/x
  3. Step 3: Cross multiply
    1,281,717.20x = 1,920,271.80 × 615,400.40
  4. Step 4: Simplify right side
    1,281,717.20x = 1,181,736,033,828.72
  5. Step 5: Solve for x
    x = 1,181,736,033,828.72/1,281,717.20
  6. Step 6: Final answer
    x = 921,994.36

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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.