Home / 839,810,708.40-1,260,345,918.60-430,656,250.80

Finding the Fourth Proportional to 839,810,708.40, 1,260,345,918.60 and 430,656,250.80

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Solution

The fourth proportional to 839,810,708.40, 1,260,345,918.60 and 430,656,250.80 is: 646,307,367.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,810,708.40 : 1,260,345,918.60 = 430,656,250.80 : x
  2. Step 2: Convert to fraction form
    839,810,708.40/1,260,345,918.60 = 430,656,250.80/x
  3. Step 3: Cross multiply
    839,810,708.40x = 1,260,345,918.60 × 430,656,250.80
  4. Step 4: Simplify right side
    839,810,708.40x = 542,775,848,015,357,952
  5. Step 5: Solve for x
    x = 542,775,848,015,357,952/839,810,708.40
  6. Step 6: Final answer
    x = 646,307,367.35

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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.