Home / 644,259.15-889,107.17-357,780.51

Finding the Fourth Proportional to 644,259.15, 889,107.17 and 357,780.51

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Solution

The fourth proportional to 644,259.15, 889,107.17 and 357,780.51 is: 493,753.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,259.15 : 889,107.17 = 357,780.51 : x
  2. Step 2: Convert to fraction form
    644,259.15/889,107.17 = 357,780.51/x
  3. Step 3: Cross multiply
    644,259.15x = 889,107.17 × 357,780.51
  4. Step 4: Simplify right side
    644,259.15x = 318,105,214,938.35
  5. Step 5: Solve for x
    x = 318,105,214,938.35/644,259.15
  6. Step 6: Final answer
    x = 493,753.51

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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.