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Finding the Fourth Proportional to 385,360.40, 578,040.60 and 377,487.20

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Solution

The fourth proportional to 385,360.40, 578,040.60 and 377,487.20 is: 566,230.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,360.40 : 578,040.60 = 377,487.20 : x
  2. Step 2: Convert to fraction form
    385,360.40/578,040.60 = 377,487.20/x
  3. Step 3: Cross multiply
    385,360.40x = 578,040.60 × 377,487.20
  4. Step 4: Simplify right side
    385,360.40x = 218,202,927,580.32
  5. Step 5: Solve for x
    x = 218,202,927,580.32/385,360.40
  6. Step 6: Final answer
    x = 566,230.80

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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.