Home / 821,592,208,555.78-1,133,798,581,612.20-455,786,421,305.40

Finding the Fourth Proportional to 821,592,208,555.78, 1,133,798,581,612.20 and 455,786,421,305.40

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Solution

The fourth proportional to 821,592,208,555.78, 1,133,798,581,612.20 and 455,786,421,305.40 is: 628,986,001,343.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,592,208,555.78 : 1,133,798,581,612.20 = 455,786,421,305.40 : x
  2. Step 2: Convert to fraction form
    821,592,208,555.78/1,133,798,581,612.20 = 455,786,421,305.40/x
  3. Step 3: Cross multiply
    821,592,208,555.78x = 1,133,798,581,612.20 × 455,786,421,305.40
  4. Step 4: Simplify right side
    821,592,208,555.78x = 516,769,997,994,163,143,966,720
  5. Step 5: Solve for x
    x = 516,769,997,994,163,143,966,720/821,592,208,555.78
  6. Step 6: Final answer
    x = 628,986,001,343.12

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Double scale
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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.