Home / 430,483.20-645,724.80-272,889.60

Finding the Fourth Proportional to 430,483.20, 645,724.80 and 272,889.60

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Solution

The fourth proportional to 430,483.20, 645,724.80 and 272,889.60 is: 409,334.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,483.20 : 645,724.80 = 272,889.60 : x
  2. Step 2: Convert to fraction form
    430,483.20/645,724.80 = 272,889.60/x
  3. Step 3: Cross multiply
    430,483.20x = 645,724.80 × 272,889.60
  4. Step 4: Simplify right side
    430,483.20x = 176,211,582,382.08
  5. Step 5: Solve for x
    x = 176,211,582,382.08/430,483.20
  6. Step 6: Final answer
    x = 409,334.40

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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.