Home / 644,278.40-889,503.75-415,230.24

Finding the Fourth Proportional to 644,278.40, 889,503.75 and 415,230.24

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Solution

The fourth proportional to 644,278.40, 889,503.75 and 415,230.24 is: 573,275.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,278.40 : 889,503.75 = 415,230.24 : x
  2. Step 2: Convert to fraction form
    644,278.40/889,503.75 = 415,230.24/x
  3. Step 3: Cross multiply
    644,278.40x = 889,503.75 × 415,230.24
  4. Step 4: Simplify right side
    644,278.40x = 369,348,855,593.40
  5. Step 5: Solve for x
    x = 369,348,855,593.40/644,278.40
  6. Step 6: Final answer
    x = 573,275.25

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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.