Home / 918,030.70-1,375,405.80-443,670.40

Finding the Fourth Proportional to 918,030.70, 1,375,405.80 and 443,670.40

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Solution

The fourth proportional to 918,030.70, 1,375,405.80 and 443,670.40 is: 664,712.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,030.70 : 1,375,405.80 = 443,670.40 : x
  2. Step 2: Convert to fraction form
    918,030.70/1,375,405.80 = 443,670.40/x
  3. Step 3: Cross multiply
    918,030.70x = 1,375,405.80 × 443,670.40
  4. Step 4: Simplify right side
    918,030.70x = 610,226,841,448.32
  5. Step 5: Solve for x
    x = 610,226,841,448.32/918,030.70
  6. Step 6: Final answer
    x = 664,712.89

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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.