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Finding the Fourth Proportional to 977,494.80, 1,465,804.80 and 378,256.80

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Solution

The fourth proportional to 977,494.80, 1,465,804.80 and 378,256.80 is: 567,215.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,494.80 : 1,465,804.80 = 378,256.80 : x
  2. Step 2: Convert to fraction form
    977,494.80/1,465,804.80 = 378,256.80/x
  3. Step 3: Cross multiply
    977,494.80x = 1,465,804.80 × 378,256.80
  4. Step 4: Simplify right side
    977,494.80x = 554,450,633,072.64
  5. Step 5: Solve for x
    x = 554,450,633,072.64/977,494.80
  6. Step 6: Final answer
    x = 567,215.94

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Double scale
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1.5x scale

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.