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Finding the Fourth Proportional to 570,411.60, 787,173.84 and 315,757.32

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Solution

The fourth proportional to 570,411.60, 787,173.84 and 315,757.32 is: 435,748.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,411.60 : 787,173.84 = 315,757.32 : x
  2. Step 2: Convert to fraction form
    570,411.60/787,173.84 = 315,757.32/x
  3. Step 3: Cross multiply
    570,411.60x = 787,173.84 × 315,757.32
  4. Step 4: Simplify right side
    570,411.60x = 248,555,902,092.51
  5. Step 5: Solve for x
    x = 248,555,902,092.51/570,411.60
  6. Step 6: Final answer
    x = 435,748.33

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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.