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Finding the Fourth Proportional to 1,213,502,948.64, 1,674,622,146.96 and 656,573,775.84

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Solution

The fourth proportional to 1,213,502,948.64, 1,674,622,146.96 and 656,573,775.84 is: 906,065,360.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,502,948.64 : 1,674,622,146.96 = 656,573,775.84 : x
  2. Step 2: Convert to fraction form
    1,213,502,948.64/1,674,622,146.96 = 656,573,775.84/x
  3. Step 3: Cross multiply
    1,213,502,948.64x = 1,674,622,146.96 × 656,573,775.84
  4. Step 4: Simplify right side
    1,213,502,948.64x = 1,099,512,986,134,814,720
  5. Step 5: Solve for x
    x = 1,099,512,986,134,814,720/1,213,502,948.64
  6. Step 6: Final answer
    x = 906,065,360.09

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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.