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Finding the Fourth Proportional to 788,728.32, 1,088,453.12 and 431,032.32

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Solution

The fourth proportional to 788,728.32, 1,088,453.12 and 431,032.32 is: 594,828.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,728.32 : 1,088,453.12 = 431,032.32 : x
  2. Step 2: Convert to fraction form
    788,728.32/1,088,453.12 = 431,032.32/x
  3. Step 3: Cross multiply
    788,728.32x = 1,088,453.12 × 431,032.32
  4. Step 4: Simplify right side
    788,728.32x = 469,158,473,524.84
  5. Step 5: Solve for x
    x = 469,158,473,524.84/788,728.32
  6. Step 6: Final answer
    x = 594,828.99

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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.