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Finding the Fourth Proportional to 616,872.26, 851,498.10 and 423,918.90

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Solution

The fourth proportional to 616,872.26, 851,498.10 and 423,918.90 is: 585,155.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,872.26 : 851,498.10 = 423,918.90 : x
  2. Step 2: Convert to fraction form
    616,872.26/851,498.10 = 423,918.90/x
  3. Step 3: Cross multiply
    616,872.26x = 851,498.10 × 423,918.90
  4. Step 4: Simplify right side
    616,872.26x = 360,966,137,904.09
  5. Step 5: Solve for x
    x = 360,966,137,904.09/616,872.26
  6. Step 6: Final answer
    x = 585,155.40

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1.5x scale

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.