Home / 806,651,222.40-1,209,976,833.60-645,408,086.40

Finding the Fourth Proportional to 806,651,222.40, 1,209,976,833.60 and 645,408,086.40

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Solution

The fourth proportional to 806,651,222.40, 1,209,976,833.60 and 645,408,086.40 is: 968,112,129.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,651,222.40 : 1,209,976,833.60 = 645,408,086.40 : x
  2. Step 2: Convert to fraction form
    806,651,222.40/1,209,976,833.60 = 645,408,086.40/x
  3. Step 3: Cross multiply
    806,651,222.40x = 1,209,976,833.60 × 645,408,086.40
  4. Step 4: Simplify right side
    806,651,222.40x = 780,928,832,762,107,136
  5. Step 5: Solve for x
    x = 780,928,832,762,107,136/806,651,222.40
  6. Step 6: Final answer
    x = 968,112,129.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.