Home / 911,747.60-1,367,621.40-406,307.60

Finding the Fourth Proportional to 911,747.60, 1,367,621.40 and 406,307.60

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Solution

The fourth proportional to 911,747.60, 1,367,621.40 and 406,307.60 is: 609,461.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,747.60 : 1,367,621.40 = 406,307.60 : x
  2. Step 2: Convert to fraction form
    911,747.60/1,367,621.40 = 406,307.60/x
  3. Step 3: Cross multiply
    911,747.60x = 1,367,621.40 × 406,307.60
  4. Step 4: Simplify right side
    911,747.60x = 555,674,968,742.64
  5. Step 5: Solve for x
    x = 555,674,968,742.64/911,747.60
  6. Step 6: Final answer
    x = 609,461.40

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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.