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Finding the Fourth Proportional to 579,970.60, 868,919.10 and 490,805.80

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Solution

The fourth proportional to 579,970.60, 868,919.10 and 490,805.80 is: 735,331.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,970.60 : 868,919.10 = 490,805.80 : x
  2. Step 2: Convert to fraction form
    579,970.60/868,919.10 = 490,805.80/x
  3. Step 3: Cross multiply
    579,970.60x = 868,919.10 × 490,805.80
  4. Step 4: Simplify right side
    579,970.60x = 426,470,534,010.78
  5. Step 5: Solve for x
    x = 426,470,534,010.78/579,970.60
  6. Step 6: Final answer
    x = 735,331.30

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Double scale
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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.