Home / 1,333,128.60-1,999,692.90-854,831.70

Finding the Fourth Proportional to 1,333,128.60, 1,999,692.90 and 854,831.70

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Solution

The fourth proportional to 1,333,128.60, 1,999,692.90 and 854,831.70 is: 1,282,247.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,333,128.60 : 1,999,692.90 = 854,831.70 : x
  2. Step 2: Convert to fraction form
    1,333,128.60/1,999,692.90 = 854,831.70/x
  3. Step 3: Cross multiply
    1,333,128.60x = 1,999,692.90 × 854,831.70
  4. Step 4: Simplify right side
    1,333,128.60x = 1,709,400,881,184.93
  5. Step 5: Solve for x
    x = 1,709,400,881,184.93/1,333,128.60
  6. Step 6: Final answer
    x = 1,282,247.55

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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.