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Finding the Fourth Proportional to 570,617.58, 787,442.64 and 315,963.30

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Solution

The fourth proportional to 570,617.58, 787,442.64 and 315,963.30 is: 436,024.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,617.58 : 787,442.64 = 315,963.30 : x
  2. Step 2: Convert to fraction form
    570,617.58/787,442.64 = 315,963.30/x
  3. Step 3: Cross multiply
    570,617.58x = 787,442.64 × 315,963.30
  4. Step 4: Simplify right side
    570,617.58x = 248,802,975,095.11
  5. Step 5: Solve for x
    x = 248,802,975,095.11/570,617.58
  6. Step 6: Final answer
    x = 436,024.03

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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.