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Finding the Fourth Proportional to 570,375.20, 787,117.78 and 315,726.39

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Solution

The fourth proportional to 570,375.20, 787,117.78 and 315,726.39 is: 435,702.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,375.20 : 787,117.78 = 315,726.39 : x
  2. Step 2: Convert to fraction form
    570,375.20/787,117.78 = 315,726.39/x
  3. Step 3: Cross multiply
    570,375.20x = 787,117.78 × 315,726.39
  4. Step 4: Simplify right side
    570,375.20x = 248,513,855,184.21
  5. Step 5: Solve for x
    x = 248,513,855,184.21/570,375.20
  6. Step 6: Final answer
    x = 435,702.42

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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.