Home / 720,709,983.81-994,517,894.16-419,351,050.35

Finding the Fourth Proportional to 720,709,983.81, 994,517,894.16 and 419,351,050.35

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Solution

The fourth proportional to 720,709,983.81, 994,517,894.16 and 419,351,050.35 is: 578,668,442.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,709,983.81 : 994,517,894.16 = 419,351,050.35 : x
  2. Step 2: Convert to fraction form
    720,709,983.81/994,517,894.16 = 419,351,050.35/x
  3. Step 3: Cross multiply
    720,709,983.81x = 994,517,894.16 × 419,351,050.35
  4. Step 4: Simplify right side
    720,709,983.81x = 417,052,123,507,866,112
  5. Step 5: Solve for x
    x = 417,052,123,507,866,112/720,709,983.81
  6. Step 6: Final answer
    x = 578,668,442.06

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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.