Home / 780,965,685.21-1,077,729,688.98-428,547,573.51

Finding the Fourth Proportional to 780,965,685.21, 1,077,729,688.98 and 428,547,573.51

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Solution

The fourth proportional to 780,965,685.21, 1,077,729,688.98 and 428,547,573.51 is: 591,394,029.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,965,685.21 : 1,077,729,688.98 = 428,547,573.51 : x
  2. Step 2: Convert to fraction form
    780,965,685.21/1,077,729,688.98 = 428,547,573.51/x
  3. Step 3: Cross multiply
    780,965,685.21x = 1,077,729,688.98 × 428,547,573.51
  4. Step 4: Simplify right side
    780,965,685.21x = 461,858,443,112,065,984
  5. Step 5: Solve for x
    x = 461,858,443,112,065,984/780,965,685.21
  6. Step 6: Final answer
    x = 591,394,029.03

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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.