Home / 838,691,330.40-1,258,036,995.20-256,425,576.71

Finding the Fourth Proportional to 838,691,330.40, 1,258,036,995.20 and 256,425,576.71

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Solution

The fourth proportional to 838,691,330.40, 1,258,036,995.20 and 256,425,576.71 is: 384,638,364.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,691,330.40 : 1,258,036,995.20 = 256,425,576.71 : x
  2. Step 2: Convert to fraction form
    838,691,330.40/1,258,036,995.20 = 256,425,576.71/x
  3. Step 3: Cross multiply
    838,691,330.40x = 1,258,036,995.20 × 256,425,576.71
  4. Step 4: Simplify right side
    838,691,330.40x = 322,592,862,009,103,168
  5. Step 5: Solve for x
    x = 322,592,862,009,103,168/838,691,330.40
  6. Step 6: Final answer
    x = 384,638,364.93

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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.