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Finding the Fourth Proportional to 647,900.40, 894,096.45 and 357,514.68

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Solution

The fourth proportional to 647,900.40, 894,096.45 and 357,514.68 is: 493,366.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,900.40 : 894,096.45 = 357,514.68 : x
  2. Step 2: Convert to fraction form
    647,900.40/894,096.45 = 357,514.68/x
  3. Step 3: Cross multiply
    647,900.40x = 894,096.45 × 357,514.68
  4. Step 4: Simplify right side
    647,900.40x = 319,652,606,210.89
  5. Step 5: Solve for x
    x = 319,652,606,210.89/647,900.40
  6. Step 6: Final answer
    x = 493,366.89

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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.