Home / 1,189,831.40-1,781,346.31-1,114,412.70

Finding the Fourth Proportional to 1,189,831.40, 1,781,346.31 and 1,114,412.70

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Solution

The fourth proportional to 1,189,831.40, 1,781,346.31 and 1,114,412.70 is: 1,668,433.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,831.40 : 1,781,346.31 = 1,114,412.70 : x
  2. Step 2: Convert to fraction form
    1,189,831.40/1,781,346.31 = 1,114,412.70/x
  3. Step 3: Cross multiply
    1,189,831.40x = 1,781,346.31 × 1,114,412.70
  4. Step 4: Simplify right side
    1,189,831.40x = 1,985,154,950,962.14
  5. Step 5: Solve for x
    x = 1,985,154,950,962.14/1,189,831.40
  6. Step 6: Final answer
    x = 1,668,433.82

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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.