Home / 638,686,933.95-881,382,835.40-370,787,624.67

Finding the Fourth Proportional to 638,686,933.95, 881,382,835.40 and 370,787,624.67

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Solution

The fourth proportional to 638,686,933.95, 881,382,835.40 and 370,787,624.67 is: 511,683,941.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,686,933.95 : 881,382,835.40 = 370,787,624.67 : x
  2. Step 2: Convert to fraction form
    638,686,933.95/881,382,835.40 = 370,787,624.67/x
  3. Step 3: Cross multiply
    638,686,933.95x = 881,382,835.40 × 370,787,624.67
  4. Step 4: Simplify right side
    638,686,933.95x = 326,805,847,961,021,632
  5. Step 5: Solve for x
    x = 326,805,847,961,021,632/638,686,933.95
  6. Step 6: Final answer
    x = 511,683,941.83

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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.