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Finding the Fourth Proportional to 570,506.17, 787,327.55 and 315,885.37

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Solution

The fourth proportional to 570,506.17, 787,327.55 and 315,885.37 is: 435,937.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,506.17 : 787,327.55 = 315,885.37 : x
  2. Step 2: Convert to fraction form
    570,506.17/787,327.55 = 315,885.37/x
  3. Step 3: Cross multiply
    570,506.17x = 787,327.55 × 315,885.37
  4. Step 4: Simplify right side
    570,506.17x = 248,705,252,863.52
  5. Step 5: Solve for x
    x = 248,705,252,863.52/570,506.17
  6. Step 6: Final answer
    x = 435,937.88

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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.