Home / 644,848.60-966,133.94-391,612.36

Finding the Fourth Proportional to 644,848.60, 966,133.94 and 391,612.36

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Solution

The fourth proportional to 644,848.60, 966,133.94 and 391,612.36 is: 586,726.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,848.60 : 966,133.94 = 391,612.36 : x
  2. Step 2: Convert to fraction form
    644,848.60/966,133.94 = 391,612.36/x
  3. Step 3: Cross multiply
    644,848.60x = 966,133.94 × 391,612.36
  4. Step 4: Simplify right side
    644,848.60x = 378,349,992,319.50
  5. Step 5: Solve for x
    x = 378,349,992,319.50/644,848.60
  6. Step 6: Final answer
    x = 586,726.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.