Home / 1,490,597,600.40-2,056,940,730.72-821,540,607.12

Finding the Fourth Proportional to 1,490,597,600.40, 2,056,940,730.72 and 821,540,607.12

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Solution

The fourth proportional to 1,490,597,600.40, 2,056,940,730.72 and 821,540,607.12 is: 1,133,679,764.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490,597,600.40 : 2,056,940,730.72 = 821,540,607.12 : x
  2. Step 2: Convert to fraction form
    1,490,597,600.40/2,056,940,730.72 = 821,540,607.12/x
  3. Step 3: Cross multiply
    1,490,597,600.40x = 2,056,940,730.72 × 821,540,607.12
  4. Step 4: Simplify right side
    1,490,597,600.40x = 1,689,860,336,725,565,184
  5. Step 5: Solve for x
    x = 1,689,860,336,725,565,184/1,490,597,600.40
  6. Step 6: Final answer
    x = 1,133,679,764.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.