Home / 905,786,085.23-1,358,342,714.59-315,424,719.79

Finding the Fourth Proportional to 905,786,085.23, 1,358,342,714.59 and 315,424,719.79

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Solution

The fourth proportional to 905,786,085.23, 1,358,342,714.59 and 315,424,719.79 is: 473,019,929.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,786,085.23 : 1,358,342,714.59 = 315,424,719.79 : x
  2. Step 2: Convert to fraction form
    905,786,085.23/1,358,342,714.59 = 315,424,719.79/x
  3. Step 3: Cross multiply
    905,786,085.23x = 1,358,342,714.59 × 315,424,719.79
  4. Step 4: Simplify right side
    905,786,085.23x = 428,454,870,124,154,368
  5. Step 5: Solve for x
    x = 428,454,870,124,154,368/905,786,085.23
  6. Step 6: Final answer
    x = 473,019,929.44

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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.