Home / 780,461,990.07-1,077,105,650.85-428,106,082.29

Finding the Fourth Proportional to 780,461,990.07, 1,077,105,650.85 and 428,106,082.29

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Solution

The fourth proportional to 780,461,990.07, 1,077,105,650.85 and 428,106,082.29 is: 590,823,750.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,461,990.07 : 1,077,105,650.85 = 428,106,082.29 : x
  2. Step 2: Convert to fraction form
    780,461,990.07/1,077,105,650.85 = 428,106,082.29/x
  3. Step 3: Cross multiply
    780,461,990.07x = 1,077,105,650.85 × 428,106,082.29
  4. Step 4: Simplify right side
    780,461,990.07x = 461,115,480,397,814,080
  5. Step 5: Solve for x
    x = 461,115,480,397,814,080/780,461,990.07
  6. Step 6: Final answer
    x = 590,823,750.89

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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.