Home / 896,290.70-1,236,881.34-488,392.61

Finding the Fourth Proportional to 896,290.70, 1,236,881.34 and 488,392.61

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Solution

The fourth proportional to 896,290.70, 1,236,881.34 and 488,392.61 is: 673,981.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    896,290.70 : 1,236,881.34 = 488,392.61 : x
  2. Step 2: Convert to fraction form
    896,290.70/1,236,881.34 = 488,392.61/x
  3. Step 3: Cross multiply
    896,290.70x = 1,236,881.34 × 488,392.61
  4. Step 4: Simplify right side
    896,290.70x = 604,083,699,718.49
  5. Step 5: Solve for x
    x = 604,083,699,718.49/896,290.70
  6. Step 6: Final answer
    x = 673,981.89

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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.