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Finding the Fourth Proportional to 507,643.20, 761,464.80 and 484,315.20

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Solution

The fourth proportional to 507,643.20, 761,464.80 and 484,315.20 is: 726,472.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,643.20 : 761,464.80 = 484,315.20 : x
  2. Step 2: Convert to fraction form
    507,643.20/761,464.80 = 484,315.20/x
  3. Step 3: Cross multiply
    507,643.20x = 761,464.80 × 484,315.20
  4. Step 4: Simplify right side
    507,643.20x = 368,788,976,904.96
  5. Step 5: Solve for x
    x = 368,788,976,904.96/507,643.20
  6. Step 6: Final answer
    x = 726,472.80

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Double scale
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Similar ratio
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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.