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Finding the Fourth Proportional to 570,617.72, 787,442.82 and 315,963.44

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Solution

The fourth proportional to 570,617.72, 787,442.82 and 315,963.44 is: 436,024.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,617.72 : 787,442.82 = 315,963.44 : x
  2. Step 2: Convert to fraction form
    570,617.72/787,442.82 = 315,963.44/x
  3. Step 3: Cross multiply
    570,617.72x = 787,442.82 × 315,963.44
  4. Step 4: Simplify right side
    570,617.72x = 248,803,142,210.50
  5. Step 5: Solve for x
    x = 248,803,142,210.50/570,617.72
  6. Step 6: Final answer
    x = 436,024.21

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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.