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Finding the Fourth Proportional to 407,800.60, 611,700.90 and 112,312.60

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Solution

The fourth proportional to 407,800.60, 611,700.90 and 112,312.60 is: 168,468.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,800.60 : 611,700.90 = 112,312.60 : x
  2. Step 2: Convert to fraction form
    407,800.60/611,700.90 = 112,312.60/x
  3. Step 3: Cross multiply
    407,800.60x = 611,700.90 × 112,312.60
  4. Step 4: Simplify right side
    407,800.60x = 68,701,718,501.34
  5. Step 5: Solve for x
    x = 68,701,718,501.34/407,800.60
  6. Step 6: Final answer
    x = 168,468.90

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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.