Home / 763,442.40-1,145,163.60-679,461.60

Finding the Fourth Proportional to 763,442.40, 1,145,163.60 and 679,461.60

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Solution

The fourth proportional to 763,442.40, 1,145,163.60 and 679,461.60 is: 1,019,192.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,442.40 : 1,145,163.60 = 679,461.60 : x
  2. Step 2: Convert to fraction form
    763,442.40/1,145,163.60 = 679,461.60/x
  3. Step 3: Cross multiply
    763,442.40x = 1,145,163.60 × 679,461.60
  4. Step 4: Simplify right side
    763,442.40x = 778,094,691,917.76
  5. Step 5: Solve for x
    x = 778,094,691,917.76/763,442.40
  6. Step 6: Final answer
    x = 1,019,192.40

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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.