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Finding the Fourth Proportional to 617,144.86, 851,316.94 and 358,992.76

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Solution

The fourth proportional to 617,144.86, 851,316.94 and 358,992.76 is: 495,210.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,144.86 : 851,316.94 = 358,992.76 : x
  2. Step 2: Convert to fraction form
    617,144.86/851,316.94 = 358,992.76/x
  3. Step 3: Cross multiply
    617,144.86x = 851,316.94 × 358,992.76
  4. Step 4: Simplify right side
    617,144.86x = 305,616,617,925.35
  5. Step 5: Solve for x
    x = 305,616,617,925.35/617,144.86
  6. Step 6: Final answer
    x = 495,210.51

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Double scale
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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.