Home / 1,222,079,109.28-1,686,612,776.16-686,318,822.08

Finding the Fourth Proportional to 1,222,079,109.28, 1,686,612,776.16 and 686,318,822.08

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Solution

The fourth proportional to 1,222,079,109.28, 1,686,612,776.16 and 686,318,822.08 is: 947,200,623.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,079,109.28 : 1,686,612,776.16 = 686,318,822.08 : x
  2. Step 2: Convert to fraction form
    1,222,079,109.28/1,686,612,776.16 = 686,318,822.08/x
  3. Step 3: Cross multiply
    1,222,079,109.28x = 1,686,612,776.16 × 686,318,822.08
  4. Step 4: Simplify right side
    1,222,079,109.28x = 1,157,554,093,839,209,984
  5. Step 5: Solve for x
    x = 1,157,554,093,839,209,984/1,222,079,109.28
  6. Step 6: Final answer
    x = 947,200,623.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.