Home / 1,490,597,670.96-2,056,940,844.12-821,540,689.20

Finding the Fourth Proportional to 1,490,597,670.96, 2,056,940,844.12 and 821,540,689.20

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Solution

The fourth proportional to 1,490,597,670.96, 2,056,940,844.12 and 821,540,689.20 is: 1,133,679,886.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490,597,670.96 : 2,056,940,844.12 = 821,540,689.20 : x
  2. Step 2: Convert to fraction form
    1,490,597,670.96/2,056,940,844.12 = 821,540,689.20/x
  3. Step 3: Cross multiply
    1,490,597,670.96x = 2,056,940,844.12 × 821,540,689.20
  4. Step 4: Simplify right side
    1,490,597,670.96x = 1,689,860,598,721,974,528
  5. Step 5: Solve for x
    x = 1,689,860,598,721,974,528/1,490,597,670.96
  6. Step 6: Final answer
    x = 1,133,679,886.70

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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.