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Finding the Fourth Proportional to 570,598.31, 787,416.05 and 315,944.03

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Solution

The fourth proportional to 570,598.31, 787,416.05 and 315,944.03 is: 435,997.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,598.31 : 787,416.05 = 315,944.03 : x
  2. Step 2: Convert to fraction form
    570,598.31/787,416.05 = 315,944.03/x
  3. Step 3: Cross multiply
    570,598.31x = 787,416.05 × 315,944.03
  4. Step 4: Simplify right side
    570,598.31x = 248,779,398,543.96
  5. Step 5: Solve for x
    x = 248,779,398,543.96/570,598.31
  6. Step 6: Final answer
    x = 435,997.43

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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.