Home / 1,138,708,429.80-1,708,062,644.70-679,165,492.20

Finding the Fourth Proportional to 1,138,708,429.80, 1,708,062,644.70 and 679,165,492.20

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Solution

The fourth proportional to 1,138,708,429.80, 1,708,062,644.70 and 679,165,492.20 is: 1,018,748,238.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,708,429.80 : 1,708,062,644.70 = 679,165,492.20 : x
  2. Step 2: Convert to fraction form
    1,138,708,429.80/1,708,062,644.70 = 679,165,492.20/x
  3. Step 3: Cross multiply
    1,138,708,429.80x = 1,708,062,644.70 × 679,165,492.20
  4. Step 4: Simplify right side
    1,138,708,429.80x = 1,160,057,206,796,109,312
  5. Step 5: Solve for x
    x = 1,160,057,206,796,109,312/1,138,708,429.80
  6. Step 6: Final answer
    x = 1,018,748,238.30

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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.