Home / 708,825,518,008.12-978,179,262,663.44-388,041,353,116.08

Finding the Fourth Proportional to 708,825,518,008.12, 978,179,262,663.44 and 388,041,353,116.08

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Solution

The fourth proportional to 708,825,518,008.12, 978,179,262,663.44 and 388,041,353,116.08 is: 535,497,093,474.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,825,518,008.12 : 978,179,262,663.44 = 388,041,353,116.08 : x
  2. Step 2: Convert to fraction form
    708,825,518,008.12/978,179,262,663.44 = 388,041,353,116.08/x
  3. Step 3: Cross multiply
    708,825,518,008.12x = 978,179,262,663.44 × 388,041,353,116.08
  4. Step 4: Simplify right side
    708,825,518,008.12x = 379,574,004,674,010,690,879,488
  5. Step 5: Solve for x
    x = 379,574,004,674,010,690,879,488/708,825,518,008.12
  6. Step 6: Final answer
    x = 535,497,093,474.65

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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.