Home / 811,966,819.62-1,218,462,565.29-345,627,482.25

Finding the Fourth Proportional to 811,966,819.62, 1,218,462,565.29 and 345,627,482.25

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Solution

The fourth proportional to 811,966,819.62, 1,218,462,565.29 and 345,627,482.25 is: 518,659,307.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,966,819.62 : 1,218,462,565.29 = 345,627,482.25 : x
  2. Step 2: Convert to fraction form
    811,966,819.62/1,218,462,565.29 = 345,627,482.25/x
  3. Step 3: Cross multiply
    811,966,819.62x = 1,218,462,565.29 × 345,627,482.25
  4. Step 4: Simplify right side
    811,966,819.62x = 421,134,148,657,058,944
  5. Step 5: Solve for x
    x = 421,134,148,657,058,944/811,966,819.62
  6. Step 6: Final answer
    x = 518,659,307.84

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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.