Home / 873,085,775.80-1,309,628,663.70-436,453,850.20

Finding the Fourth Proportional to 873,085,775.80, 1,309,628,663.70 and 436,453,850.20

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Solution

The fourth proportional to 873,085,775.80, 1,309,628,663.70 and 436,453,850.20 is: 654,680,775.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,085,775.80 : 1,309,628,663.70 = 436,453,850.20 : x
  2. Step 2: Convert to fraction form
    873,085,775.80/1,309,628,663.70 = 436,453,850.20/x
  3. Step 3: Cross multiply
    873,085,775.80x = 1,309,628,663.70 × 436,453,850.20
  4. Step 4: Simplify right side
    873,085,775.80x = 571,592,472,604,145,984
  5. Step 5: Solve for x
    x = 571,592,472,604,145,984/873,085,775.80
  6. Step 6: Final answer
    x = 654,680,775.30

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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.