Home / 463,979.79-640,345.23-260,085.78

Finding the Fourth Proportional to 463,979.79, 640,345.23 and 260,085.78

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Solution

The fourth proportional to 463,979.79, 640,345.23 and 260,085.78 is: 358,948.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,979.79 : 640,345.23 = 260,085.78 : x
  2. Step 2: Convert to fraction form
    463,979.79/640,345.23 = 260,085.78/x
  3. Step 3: Cross multiply
    463,979.79x = 640,345.23 × 260,085.78
  4. Step 4: Simplify right side
    463,979.79x = 166,544,688,613.83
  5. Step 5: Solve for x
    x = 166,544,688,613.83/463,979.79
  6. Step 6: Final answer
    x = 358,948.15

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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.