Home / 885,688.42-1,222,348.38-498,515.62

Finding the Fourth Proportional to 885,688.42, 1,222,348.38 and 498,515.62

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Solution

The fourth proportional to 885,688.42, 1,222,348.38 and 498,515.62 is: 688,006.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,688.42 : 1,222,348.38 = 498,515.62 : x
  2. Step 2: Convert to fraction form
    885,688.42/1,222,348.38 = 498,515.62/x
  3. Step 3: Cross multiply
    885,688.42x = 1,222,348.38 × 498,515.62
  4. Step 4: Simplify right side
    885,688.42x = 609,359,760,511.70
  5. Step 5: Solve for x
    x = 609,359,760,511.70/885,688.42
  6. Step 6: Final answer
    x = 688,006.92

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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.