Home / 1,018,392,883.81-1,534,394,464.69-920,138,792.32

Finding the Fourth Proportional to 1,018,392,883.81, 1,534,394,464.69 and 920,138,792.32

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Solution

The fourth proportional to 1,018,392,883.81, 1,534,394,464.69 and 920,138,792.32 is: 1,386,356,770.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,018,392,883.81 : 1,534,394,464.69 = 920,138,792.32 : x
  2. Step 2: Convert to fraction form
    1,018,392,883.81/1,534,394,464.69 = 920,138,792.32/x
  3. Step 3: Cross multiply
    1,018,392,883.81x = 1,534,394,464.69 × 920,138,792.32
  4. Step 4: Simplify right side
    1,018,392,883.81x = 1,411,855,869,682,349,568
  5. Step 5: Solve for x
    x = 1,411,855,869,682,349,568/1,018,392,883.81
  6. Step 6: Final answer
    x = 1,386,356,770.68

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.