Home / 511,931,947.32-706,486,138.02-288,921,418.92

Finding the Fourth Proportional to 511,931,947.32, 706,486,138.02 and 288,921,418.92

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Solution

The fourth proportional to 511,931,947.32, 706,486,138.02 and 288,921,418.92 is: 398,722,874.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,931,947.32 : 706,486,138.02 = 288,921,418.92 : x
  2. Step 2: Convert to fraction form
    511,931,947.32/706,486,138.02 = 288,921,418.92/x
  3. Step 3: Cross multiply
    511,931,947.32x = 706,486,138.02 × 288,921,418.92
  4. Step 4: Simplify right side
    511,931,947.32x = 204,118,977,444,049,376
  5. Step 5: Solve for x
    x = 204,118,977,444,049,376/511,931,947.32
  6. Step 6: Final answer
    x = 398,722,874.23

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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.