Home / 813,427,485.78-1,122,652,634.40-496,071,846.12

Finding the Fourth Proportional to 813,427,485.78, 1,122,652,634.40 and 496,071,846.12

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Solution

The fourth proportional to 813,427,485.78, 1,122,652,634.40 and 496,071,846.12 is: 684,653,979.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,427,485.78 : 1,122,652,634.40 = 496,071,846.12 : x
  2. Step 2: Convert to fraction form
    813,427,485.78/1,122,652,634.40 = 496,071,846.12/x
  3. Step 3: Cross multiply
    813,427,485.78x = 1,122,652,634.40 × 496,071,846.12
  4. Step 4: Simplify right side
    813,427,485.78x = 556,916,364,898,289,472
  5. Step 5: Solve for x
    x = 556,916,364,898,289,472/813,427,485.78
  6. Step 6: Final answer
    x = 684,653,979.16

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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.