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Finding the Fourth Proportional to 570,546.75, 787,379.12 and 315,897.95

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Solution

The fourth proportional to 570,546.75, 787,379.12 and 315,897.95 is: 435,952.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,546.75 : 787,379.12 = 315,897.95 : x
  2. Step 2: Convert to fraction form
    570,546.75/787,379.12 = 315,897.95/x
  3. Step 3: Cross multiply
    570,546.75x = 787,379.12 × 315,897.95
  4. Step 4: Simplify right side
    570,546.75x = 248,731,444,364.42
  5. Step 5: Solve for x
    x = 248,731,444,364.42/570,546.75
  6. Step 6: Final answer
    x = 435,952.78

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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.