Home / 742,400.35-1,024,512.48-402,868.60

Finding the Fourth Proportional to 742,400.35, 1,024,512.48 and 402,868.60

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Solution

The fourth proportional to 742,400.35, 1,024,512.48 and 402,868.60 is: 555,958.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,400.35 : 1,024,512.48 = 402,868.60 : x
  2. Step 2: Convert to fraction form
    742,400.35/1,024,512.48 = 402,868.60/x
  3. Step 3: Cross multiply
    742,400.35x = 1,024,512.48 × 402,868.60
  4. Step 4: Simplify right side
    742,400.35x = 412,743,911,291.53
  5. Step 5: Solve for x
    x = 412,743,911,291.53/742,400.35
  6. Step 6: Final answer
    x = 555,958.67

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.