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Finding the Fourth Proportional to 570,618.33, 787,443.68 and 315,964.05

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Solution

The fourth proportional to 570,618.33, 787,443.68 and 315,964.05 is: 436,025.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,618.33 : 787,443.68 = 315,964.05 : x
  2. Step 2: Convert to fraction form
    570,618.33/787,443.68 = 315,964.05/x
  3. Step 3: Cross multiply
    570,618.33x = 787,443.68 × 315,964.05
  4. Step 4: Simplify right side
    570,618.33x = 248,803,892,699.88
  5. Step 5: Solve for x
    x = 248,803,892,699.88/570,618.33
  6. Step 6: Final answer
    x = 436,025.06

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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.