Home / 711,147.20-1,064,128.80-445,035.20

Finding the Fourth Proportional to 711,147.20, 1,064,128.80 and 445,035.20

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Solution

The fourth proportional to 711,147.20, 1,064,128.80 and 445,035.20 is: 665,930.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,147.20 : 1,064,128.80 = 445,035.20 : x
  2. Step 2: Convert to fraction form
    711,147.20/1,064,128.80 = 445,035.20/x
  3. Step 3: Cross multiply
    711,147.20x = 1,064,128.80 × 445,035.20
  4. Step 4: Simplify right side
    711,147.20x = 473,574,773,333.76
  5. Step 5: Solve for x
    x = 473,574,773,333.76/711,147.20
  6. Step 6: Final answer
    x = 665,930.73

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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.