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Finding the Fourth Proportional to 483,562.40, 665,823.12 and 402,000.80

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Solution

The fourth proportional to 483,562.40, 665,823.12 and 402,000.80 is: 553,519.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,562.40 : 665,823.12 = 402,000.80 : x
  2. Step 2: Convert to fraction form
    483,562.40/665,823.12 = 402,000.80/x
  3. Step 3: Cross multiply
    483,562.40x = 665,823.12 × 402,000.80
  4. Step 4: Simplify right side
    483,562.40x = 267,661,426,898.50
  5. Step 5: Solve for x
    x = 267,661,426,898.50/483,562.40
  6. Step 6: Final answer
    x = 553,519.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.