Home / 811,966,820.49-1,218,462,566.60-345,627,483.12

Finding the Fourth Proportional to 811,966,820.49, 1,218,462,566.60 and 345,627,483.12

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Solution

The fourth proportional to 811,966,820.49, 1,218,462,566.60 and 345,627,483.12 is: 518,659,309.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,966,820.49 : 1,218,462,566.60 = 345,627,483.12 : x
  2. Step 2: Convert to fraction form
    811,966,820.49/1,218,462,566.60 = 345,627,483.12/x
  3. Step 3: Cross multiply
    811,966,820.49x = 1,218,462,566.60 × 345,627,483.12
  4. Step 4: Simplify right side
    811,966,820.49x = 421,134,150,168,165,248
  5. Step 5: Solve for x
    x = 421,134,150,168,165,248/811,966,820.49
  6. Step 6: Final answer
    x = 518,659,309.15

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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.