Home / 780,965,674.02-1,077,729,673.68-428,547,562.26

Finding the Fourth Proportional to 780,965,674.02, 1,077,729,673.68 and 428,547,562.26

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Solution

The fourth proportional to 780,965,674.02, 1,077,729,673.68 and 428,547,562.26 is: 591,394,013.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,965,674.02 : 1,077,729,673.68 = 428,547,562.26 : x
  2. Step 2: Convert to fraction form
    780,965,674.02/1,077,729,673.68 = 428,547,562.26/x
  3. Step 3: Cross multiply
    780,965,674.02x = 1,077,729,673.68 × 428,547,562.26
  4. Step 4: Simplify right side
    780,965,674.02x = 461,858,424,430,829,312
  5. Step 5: Solve for x
    x = 461,858,424,430,829,312/780,965,674.02
  6. Step 6: Final answer
    x = 591,394,013.59

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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.