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Finding the Fourth Proportional to 479,477.84, 715,570.90 and 426,335.12

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Solution

The fourth proportional to 479,477.84, 715,570.90 and 426,335.12 is: 636,260.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,477.84 : 715,570.90 = 426,335.12 : x
  2. Step 2: Convert to fraction form
    479,477.84/715,570.90 = 426,335.12/x
  3. Step 3: Cross multiply
    479,477.84x = 715,570.90 × 426,335.12
  4. Step 4: Simplify right side
    479,477.84x = 305,073,005,520.01
  5. Step 5: Solve for x
    x = 305,073,005,520.01/479,477.84
  6. Step 6: Final answer
    x = 636,260.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.