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Finding the Fourth Proportional to 578,003.60, 867,005.40 and 365,427.20

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Solution

The fourth proportional to 578,003.60, 867,005.40 and 365,427.20 is: 548,140.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,003.60 : 867,005.40 = 365,427.20 : x
  2. Step 2: Convert to fraction form
    578,003.60/867,005.40 = 365,427.20/x
  3. Step 3: Cross multiply
    578,003.60x = 867,005.40 × 365,427.20
  4. Step 4: Simplify right side
    578,003.60x = 316,827,355,706.88
  5. Step 5: Solve for x
    x = 316,827,355,706.88/578,003.60
  6. Step 6: Final answer
    x = 548,140.80

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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.