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Finding the Fourth Proportional to 422,424.60, 634,328.10 and 282,802.20

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Solution

The fourth proportional to 422,424.60, 634,328.10 and 282,802.20 is: 424,666.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,424.60 : 634,328.10 = 282,802.20 : x
  2. Step 2: Convert to fraction form
    422,424.60/634,328.10 = 282,802.20/x
  3. Step 3: Cross multiply
    422,424.60x = 634,328.10 × 282,802.20
  4. Step 4: Simplify right side
    422,424.60x = 179,389,382,201.82
  5. Step 5: Solve for x
    x = 179,389,382,201.82/422,424.60
  6. Step 6: Final answer
    x = 424,666.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.