Home / 1,112,461.60-1,669,129.80-438,428.20

Finding the Fourth Proportional to 1,112,461.60, 1,669,129.80 and 438,428.20

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Solution

The fourth proportional to 1,112,461.60, 1,669,129.80 and 438,428.20 is: 657,814.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112,461.60 : 1,669,129.80 = 438,428.20 : x
  2. Step 2: Convert to fraction form
    1,112,461.60/1,669,129.80 = 438,428.20/x
  3. Step 3: Cross multiply
    1,112,461.60x = 1,669,129.80 × 438,428.20
  4. Step 4: Simplify right side
    1,112,461.60x = 731,793,573,780.36
  5. Step 5: Solve for x
    x = 731,793,573,780.36/1,112,461.60
  6. Step 6: Final answer
    x = 657,814.68

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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.