Home / 1,247,932,913.40-1,871,395,485.30-429,623,998.20

Finding the Fourth Proportional to 1,247,932,913.40, 1,871,395,485.30 and 429,623,998.20

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Solution

The fourth proportional to 1,247,932,913.40, 1,871,395,485.30 and 429,623,998.20 is: 644,262,525.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,932,913.40 : 1,871,395,485.30 = 429,623,998.20 : x
  2. Step 2: Convert to fraction form
    1,247,932,913.40/1,871,395,485.30 = 429,623,998.20/x
  3. Step 3: Cross multiply
    1,247,932,913.40x = 1,871,395,485.30 × 429,623,998.20
  4. Step 4: Simplify right side
    1,247,932,913.40x = 803,996,410,608,015,232
  5. Step 5: Solve for x
    x = 803,996,410,608,015,232/1,247,932,913.40
  6. Step 6: Final answer
    x = 644,262,525.63

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Double scale
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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.