Home / 1,220,346,096.90-1,830,519,145.35-638,258,769.60

Finding the Fourth Proportional to 1,220,346,096.90, 1,830,519,145.35 and 638,258,769.60

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Solution

The fourth proportional to 1,220,346,096.90, 1,830,519,145.35 and 638,258,769.60 is: 957,388,154.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,346,096.90 : 1,830,519,145.35 = 638,258,769.60 : x
  2. Step 2: Convert to fraction form
    1,220,346,096.90/1,830,519,145.35 = 638,258,769.60/x
  3. Step 3: Cross multiply
    1,220,346,096.90x = 1,830,519,145.35 × 638,258,769.60
  4. Step 4: Simplify right side
    1,220,346,096.90x = 1,168,344,897,440,334,592
  5. Step 5: Solve for x
    x = 1,168,344,897,440,334,592/1,220,346,096.90
  6. Step 6: Final answer
    x = 957,388,154.40

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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.