Home / 728,340.84-1,005,240.23-456,641.64

Finding the Fourth Proportional to 728,340.84, 1,005,240.23 and 456,641.64

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Solution

The fourth proportional to 728,340.84, 1,005,240.23 and 456,641.64 is: 630,246.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,340.84 : 1,005,240.23 = 456,641.64 : x
  2. Step 2: Convert to fraction form
    728,340.84/1,005,240.23 = 456,641.64/x
  3. Step 3: Cross multiply
    728,340.84x = 1,005,240.23 × 456,641.64
  4. Step 4: Simplify right side
    728,340.84x = 459,034,544,937.97
  5. Step 5: Solve for x
    x = 459,034,544,937.97/728,340.84
  6. Step 6: Final answer
    x = 630,246.88

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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.