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Finding the Fourth Proportional to 578,466.60, 867,699.90 and 490,111.80

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Solution

The fourth proportional to 578,466.60, 867,699.90 and 490,111.80 is: 735,167.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,466.60 : 867,699.90 = 490,111.80 : x
  2. Step 2: Convert to fraction form
    578,466.60/867,699.90 = 490,111.80/x
  3. Step 3: Cross multiply
    578,466.60x = 867,699.90 × 490,111.80
  4. Step 4: Simplify right side
    578,466.60x = 425,269,959,848.82
  5. Step 5: Solve for x
    x = 425,269,959,848.82/578,466.60
  6. Step 6: Final answer
    x = 735,167.70

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Similar ratio
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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.