Home / 529,712.72-731,017.96-288,011.60

Finding the Fourth Proportional to 529,712.72, 731,017.96 and 288,011.60

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Solution

The fourth proportional to 529,712.72, 731,017.96 and 288,011.60 is: 397,463.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,712.72 : 731,017.96 = 288,011.60 : x
  2. Step 2: Convert to fraction form
    529,712.72/731,017.96 = 288,011.60/x
  3. Step 3: Cross multiply
    529,712.72x = 731,017.96 × 288,011.60
  4. Step 4: Simplify right side
    529,712.72x = 210,541,652,288.34
  5. Step 5: Solve for x
    x = 210,541,652,288.34/529,712.72
  6. Step 6: Final answer
    x = 397,463.84

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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.