Home / 791,235,980.56-1,091,971,020.27-438,925,560.40

Finding the Fourth Proportional to 791,235,980.56, 1,091,971,020.27 and 438,925,560.40

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Solution

The fourth proportional to 791,235,980.56, 1,091,971,020.27 and 438,925,560.40 is: 605,753,534.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,235,980.56 : 1,091,971,020.27 = 438,925,560.40 : x
  2. Step 2: Convert to fraction form
    791,235,980.56/1,091,971,020.27 = 438,925,560.40/x
  3. Step 3: Cross multiply
    791,235,980.56x = 1,091,971,020.27 × 438,925,560.40
  4. Step 4: Simplify right side
    791,235,980.56x = 479,293,992,012,569,472
  5. Step 5: Solve for x
    x = 479,293,992,012,569,472/791,235,980.56
  6. Step 6: Final answer
    x = 605,753,534.71

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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.