Home / 710,664.80-1,065,997.20-289,711.20

Finding the Fourth Proportional to 710,664.80, 1,065,997.20 and 289,711.20

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Solution

The fourth proportional to 710,664.80, 1,065,997.20 and 289,711.20 is: 434,566.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,664.80 : 1,065,997.20 = 289,711.20 : x
  2. Step 2: Convert to fraction form
    710,664.80/1,065,997.20 = 289,711.20/x
  3. Step 3: Cross multiply
    710,664.80x = 1,065,997.20 × 289,711.20
  4. Step 4: Simplify right side
    710,664.80x = 308,831,328,008.64
  5. Step 5: Solve for x
    x = 308,831,328,008.64/710,664.80
  6. Step 6: Final answer
    x = 434,566.80

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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.