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Finding the Fourth Proportional to 1,079,807,998.40, 1,619,711,997.60 and 712,475,979.20

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Solution

The fourth proportional to 1,079,807,998.40, 1,619,711,997.60 and 712,475,979.20 is: 1,068,713,968.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079,807,998.40 : 1,619,711,997.60 = 712,475,979.20 : x
  2. Step 2: Convert to fraction form
    1,079,807,998.40/1,619,711,997.60 = 712,475,979.20/x
  3. Step 3: Cross multiply
    1,079,807,998.40x = 1,619,711,997.60 × 712,475,979.20
  4. Step 4: Simplify right side
    1,079,807,998.40x = 1,154,005,891,512,048,128
  5. Step 5: Solve for x
    x = 1,154,005,891,512,048,128/1,079,807,998.40
  6. Step 6: Final answer
    x = 1,068,713,968.80

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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.