Home / 431,521,345,015.60-647,282,017,523.40-402,134,783,479.60

Finding the Fourth Proportional to 431,521,345,015.60, 647,282,017,523.40 and 402,134,783,479.60

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Solution

The fourth proportional to 431,521,345,015.60, 647,282,017,523.40 and 402,134,783,479.60 is: 603,202,175,219.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,521,345,015.60 : 647,282,017,523.40 = 402,134,783,479.60 : x
  2. Step 2: Convert to fraction form
    431,521,345,015.60/647,282,017,523.40 = 402,134,783,479.60/x
  3. Step 3: Cross multiply
    431,521,345,015.60x = 647,282,017,523.40 × 402,134,783,479.60
  4. Step 4: Simplify right side
    431,521,345,015.60x = 260,294,613,967,011,103,899,648
  5. Step 5: Solve for x
    x = 260,294,613,967,011,103,899,648/431,521,345,015.60
  6. Step 6: Final answer
    x = 603,202,175,219.40

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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.