Home / 1,161,128,950.70-1,602,306,262.80-678,365,647.90

Finding the Fourth Proportional to 1,161,128,950.70, 1,602,306,262.80 and 678,365,647.90

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Solution

The fourth proportional to 1,161,128,950.70, 1,602,306,262.80 and 678,365,647.90 is: 936,114,395.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,161,128,950.70 : 1,602,306,262.80 = 678,365,647.90 : x
  2. Step 2: Convert to fraction form
    1,161,128,950.70/1,602,306,262.80 = 678,365,647.90/x
  3. Step 3: Cross multiply
    1,161,128,950.70x = 1,602,306,262.80 × 678,365,647.90
  4. Step 4: Simplify right side
    1,161,128,950.70x = 1,086,949,526,094,543,872
  5. Step 5: Solve for x
    x = 1,086,949,526,094,543,872/1,161,128,950.70
  6. Step 6: Final answer
    x = 936,114,395.77

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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.