Home / 780,965,748.74-1,077,729,776.79-428,547,637.10

Finding the Fourth Proportional to 780,965,748.74, 1,077,729,776.79 and 428,547,637.10

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Solution

The fourth proportional to 780,965,748.74, 1,077,729,776.79 and 428,547,637.10 is: 591,394,116.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,965,748.74 : 1,077,729,776.79 = 428,547,637.10 : x
  2. Step 2: Convert to fraction form
    780,965,748.74/1,077,729,776.79 = 428,547,637.10/x
  3. Step 3: Cross multiply
    780,965,748.74x = 1,077,729,776.79 × 428,547,637.10
  4. Step 4: Simplify right side
    780,965,748.74x = 461,858,549,275,664,960
  5. Step 5: Solve for x
    x = 461,858,549,275,664,960/780,965,748.74
  6. Step 6: Final answer
    x = 591,394,116.86

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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.