Home / 819,230,830.40-1,229,271,398.40-359,215,500.80

Finding the Fourth Proportional to 819,230,830.40, 1,229,271,398.40 and 359,215,500.80

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Solution

The fourth proportional to 819,230,830.40, 1,229,271,398.40 and 359,215,500.80 is: 539,009,671.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,230,830.40 : 1,229,271,398.40 = 359,215,500.80 : x
  2. Step 2: Convert to fraction form
    819,230,830.40/1,229,271,398.40 = 359,215,500.80/x
  3. Step 3: Cross multiply
    819,230,830.40x = 1,229,271,398.40 × 359,215,500.80
  4. Step 4: Simplify right side
    819,230,830.40x = 441,573,340,995,372,352
  5. Step 5: Solve for x
    x = 441,573,340,995,372,352/819,230,830.40
  6. Step 6: Final answer
    x = 539,009,671.77

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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.