Home / 839,808,827.20-1,259,713,240.80-516,874,657.60

Finding the Fourth Proportional to 839,808,827.20, 1,259,713,240.80 and 516,874,657.60

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Solution

The fourth proportional to 839,808,827.20, 1,259,713,240.80 and 516,874,657.60 is: 775,311,986.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,808,827.20 : 1,259,713,240.80 = 516,874,657.60 : x
  2. Step 2: Convert to fraction form
    839,808,827.20/1,259,713,240.80 = 516,874,657.60/x
  3. Step 3: Cross multiply
    839,808,827.20x = 1,259,713,240.80 × 516,874,657.60
  4. Step 4: Simplify right side
    839,808,827.20x = 651,113,850,012,686,336
  5. Step 5: Solve for x
    x = 651,113,850,012,686,336/839,808,827.20
  6. Step 6: Final answer
    x = 775,311,986.40

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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.