Home / 685,742.40-1,028,613.60-242,510.40

Finding the Fourth Proportional to 685,742.40, 1,028,613.60 and 242,510.40

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Solution

The fourth proportional to 685,742.40, 1,028,613.60 and 242,510.40 is: 363,765.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,742.40 : 1,028,613.60 = 242,510.40 : x
  2. Step 2: Convert to fraction form
    685,742.40/1,028,613.60 = 242,510.40/x
  3. Step 3: Cross multiply
    685,742.40x = 1,028,613.60 × 242,510.40
  4. Step 4: Simplify right side
    685,742.40x = 249,449,495,581.44
  5. Step 5: Solve for x
    x = 249,449,495,581.44/685,742.40
  6. Step 6: Final answer
    x = 363,765.60

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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.