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Finding the Fourth Proportional to 452,585.10, 678,416.85 and 265,500.30

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Solution

The fourth proportional to 452,585.10, 678,416.85 and 265,500.30 is: 397,980.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,585.10 : 678,416.85 = 265,500.30 : x
  2. Step 2: Convert to fraction form
    452,585.10/678,416.85 = 265,500.30/x
  3. Step 3: Cross multiply
    452,585.10x = 678,416.85 × 265,500.30
  4. Step 4: Simplify right side
    452,585.10x = 180,119,877,200.06
  5. Step 5: Solve for x
    x = 180,119,877,200.06/452,585.10
  6. Step 6: Final answer
    x = 397,980.13

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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.