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Finding the Fourth Proportional to 524,961.25, 724,670.45 and 352,978.90

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Solution

The fourth proportional to 524,961.25, 724,670.45 and 352,978.90 is: 487,261.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,961.25 : 724,670.45 = 352,978.90 : x
  2. Step 2: Convert to fraction form
    524,961.25/724,670.45 = 352,978.90/x
  3. Step 3: Cross multiply
    524,961.25x = 724,670.45 × 352,978.90
  4. Step 4: Simplify right side
    524,961.25x = 255,793,378,303.51
  5. Step 5: Solve for x
    x = 255,793,378,303.51/524,961.25
  6. Step 6: Final answer
    x = 487,261.45

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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.