Home / 1,421,411,359.24-1,961,510,831.94-786,355,306.12

Finding the Fourth Proportional to 1,421,411,359.24, 1,961,510,831.94 and 786,355,306.12

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Solution

The fourth proportional to 1,421,411,359.24, 1,961,510,831.94 and 786,355,306.12 is: 1,085,149,939.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,411,359.24 : 1,961,510,831.94 = 786,355,306.12 : x
  2. Step 2: Convert to fraction form
    1,421,411,359.24/1,961,510,831.94 = 786,355,306.12/x
  3. Step 3: Cross multiply
    1,421,411,359.24x = 1,961,510,831.94 × 786,355,306.12
  4. Step 4: Simplify right side
    1,421,411,359.24x = 1,542,444,450,707,874,560
  5. Step 5: Solve for x
    x = 1,542,444,450,707,874,560/1,421,411,359.24
  6. Step 6: Final answer
    x = 1,085,149,939.66

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Double scale
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1.5x scale

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.