Home / 811,966,819.74-1,218,462,565.47-345,627,482.37

Finding the Fourth Proportional to 811,966,819.74, 1,218,462,565.47 and 345,627,482.37

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Solution

The fourth proportional to 811,966,819.74, 1,218,462,565.47 and 345,627,482.37 is: 518,659,308.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,966,819.74 : 1,218,462,565.47 = 345,627,482.37 : x
  2. Step 2: Convert to fraction form
    811,966,819.74/1,218,462,565.47 = 345,627,482.37/x
  3. Step 3: Cross multiply
    811,966,819.74x = 1,218,462,565.47 × 345,627,482.37
  4. Step 4: Simplify right side
    811,966,819.74x = 421,134,148,868,434,816
  5. Step 5: Solve for x
    x = 421,134,148,868,434,816/811,966,819.74
  6. Step 6: Final answer
    x = 518,659,308.03

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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.