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Finding the Fourth Proportional to 450,807.63, 675,138.15 and 260,867.60

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Solution

The fourth proportional to 450,807.63, 675,138.15 and 260,867.60 is: 390,680.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,807.63 : 675,138.15 = 260,867.60 : x
  2. Step 2: Convert to fraction form
    450,807.63/675,138.15 = 260,867.60/x
  3. Step 3: Cross multiply
    450,807.63x = 675,138.15 × 260,867.60
  4. Step 4: Simplify right side
    450,807.63x = 176,121,666,483.04
  5. Step 5: Solve for x
    x = 176,121,666,483.04/450,807.63
  6. Step 6: Final answer
    x = 390,680.31

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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.