Home / 810,119,879.85-1,118,145,284.46-492,512,638.35

Finding the Fourth Proportional to 810,119,879.85, 1,118,145,284.46 and 492,512,638.35

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Solution

The fourth proportional to 810,119,879.85, 1,118,145,284.46 and 492,512,638.35 is: 679,776,780.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,119,879.85 : 1,118,145,284.46 = 492,512,638.35 : x
  2. Step 2: Convert to fraction form
    810,119,879.85/1,118,145,284.46 = 492,512,638.35/x
  3. Step 3: Cross multiply
    810,119,879.85x = 1,118,145,284.46 × 492,512,638.35
  4. Step 4: Simplify right side
    810,119,879.85x = 550,700,684,108,005,888
  5. Step 5: Solve for x
    x = 550,700,684,108,005,888/810,119,879.85
  6. Step 6: Final answer
    x = 679,776,780.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.