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Finding the Fourth Proportional to 652,140.90, 978,211.35 and 494,676.90

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Solution

The fourth proportional to 652,140.90, 978,211.35 and 494,676.90 is: 742,015.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,140.90 : 978,211.35 = 494,676.90 : x
  2. Step 2: Convert to fraction form
    652,140.90/978,211.35 = 494,676.90/x
  3. Step 3: Cross multiply
    652,140.90x = 978,211.35 × 494,676.90
  4. Step 4: Simplify right side
    652,140.90x = 483,898,558,162.82
  5. Step 5: Solve for x
    x = 483,898,558,162.82/652,140.90
  6. Step 6: Final answer
    x = 742,015.35

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Similar ratio
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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.