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Finding the Fourth Proportional to 630,642.40, 946,546.80 and 315,325.60

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Solution

The fourth proportional to 630,642.40, 946,546.80 and 315,325.60 is: 473,280.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,642.40 : 946,546.80 = 315,325.60 : x
  2. Step 2: Convert to fraction form
    630,642.40/946,546.80 = 315,325.60/x
  3. Step 3: Cross multiply
    630,642.40x = 946,546.80 × 315,325.60
  4. Step 4: Simplify right side
    630,642.40x = 298,470,437,638.08
  5. Step 5: Solve for x
    x = 298,470,437,638.08/630,642.40
  6. Step 6: Final answer
    x = 473,280.00

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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.