Home / 1,678,586.40-2,518,623.76-879,678

Finding the Fourth Proportional to 1,678,586.40, 2,518,623.76 and 879,678

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Solution

The fourth proportional to 1,678,586.40, 2,518,623.76 and 879,678 is: 1,319,906.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,678,586.40 : 2,518,623.76 = 879,678 : x
  2. Step 2: Convert to fraction form
    1,678,586.40/2,518,623.76 = 879,678/x
  3. Step 3: Cross multiply
    1,678,586.40x = 2,518,623.76 × 879,678
  4. Step 4: Simplify right side
    1,678,586.40x = 2,215,577,911,949.28
  5. Step 5: Solve for x
    x = 2,215,577,911,949.28/1,678,586.40
  6. Step 6: Final answer
    x = 1,319,906.98

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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.