Home / 1,389,962,887.34-1,918,186,242.68-817,785,879.81

Finding the Fourth Proportional to 1,389,962,887.34, 1,918,186,242.68 and 817,785,879.81

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Solution

The fourth proportional to 1,389,962,887.34, 1,918,186,242.68 and 817,785,879.81 is: 1,128,566,552.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,962,887.34 : 1,918,186,242.68 = 817,785,879.81 : x
  2. Step 2: Convert to fraction form
    1,389,962,887.34/1,918,186,242.68 = 817,785,879.81/x
  3. Step 3: Cross multiply
    1,389,962,887.34x = 1,918,186,242.68 × 817,785,879.81
  4. Step 4: Simplify right side
    1,389,962,887.34x = 1,568,665,624,109,501,952
  5. Step 5: Solve for x
    x = 1,568,665,624,109,501,952/1,389,962,887.34
  6. Step 6: Final answer
    x = 1,128,566,552.67

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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.