Home / 810,018,036.78-1,215,018,197.76-196,602,262.54

Finding the Fourth Proportional to 810,018,036.78, 1,215,018,197.76 and 196,602,262.54

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Solution

The fourth proportional to 810,018,036.78, 1,215,018,197.76 and 196,602,262.54 is: 294,901,244.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,018,036.78 : 1,215,018,197.76 = 196,602,262.54 : x
  2. Step 2: Convert to fraction form
    810,018,036.78/1,215,018,197.76 = 196,602,262.54/x
  3. Step 3: Cross multiply
    810,018,036.78x = 1,215,018,197.76 × 196,602,262.54
  4. Step 4: Simplify right side
    810,018,036.78x = 238,875,326,706,889,152
  5. Step 5: Solve for x
    x = 238,875,326,706,889,152/810,018,036.78
  6. Step 6: Final answer
    x = 294,901,244.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.