Home / 742,706.20-1,114,059.30-490,763.80

Finding the Fourth Proportional to 742,706.20, 1,114,059.30 and 490,763.80

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Solution

The fourth proportional to 742,706.20, 1,114,059.30 and 490,763.80 is: 736,145.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,706.20 : 1,114,059.30 = 490,763.80 : x
  2. Step 2: Convert to fraction form
    742,706.20/1,114,059.30 = 490,763.80/x
  3. Step 3: Cross multiply
    742,706.20x = 1,114,059.30 × 490,763.80
  4. Step 4: Simplify right side
    742,706.20x = 546,739,975,493.34
  5. Step 5: Solve for x
    x = 546,739,975,493.34/742,706.20
  6. Step 6: Final answer
    x = 736,145.70

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Double scale
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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.