Home / 1,288,009,831.80-1,932,014,747.70-879,863,143.80

Finding the Fourth Proportional to 1,288,009,831.80, 1,932,014,747.70 and 879,863,143.80

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Solution

The fourth proportional to 1,288,009,831.80, 1,932,014,747.70 and 879,863,143.80 is: 1,319,794,715.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,009,831.80 : 1,932,014,747.70 = 879,863,143.80 : x
  2. Step 2: Convert to fraction form
    1,288,009,831.80/1,932,014,747.70 = 879,863,143.80/x
  3. Step 3: Cross multiply
    1,288,009,831.80x = 1,932,014,747.70 × 879,863,143.80
  4. Step 4: Simplify right side
    1,288,009,831.80x = 1,699,908,569,779,285,760
  5. Step 5: Solve for x
    x = 1,699,908,569,779,285,760/1,288,009,831.80
  6. Step 6: Final answer
    x = 1,319,794,715.70

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1.5x scale

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.