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Finding the Fourth Proportional to 525,643.20, 788,464.80 and 304,459.20

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Solution

The fourth proportional to 525,643.20, 788,464.80 and 304,459.20 is: 456,688.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,643.20 : 788,464.80 = 304,459.20 : x
  2. Step 2: Convert to fraction form
    525,643.20/788,464.80 = 304,459.20/x
  3. Step 3: Cross multiply
    525,643.20x = 788,464.80 × 304,459.20
  4. Step 4: Simplify right side
    525,643.20x = 240,055,362,236.16
  5. Step 5: Solve for x
    x = 240,055,362,236.16/525,643.20
  6. Step 6: Final answer
    x = 456,688.80

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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.