Home / 644,266.09-889,532.04-402,657.27

Finding the Fourth Proportional to 644,266.09, 889,532.04 and 402,657.27

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Solution

The fourth proportional to 644,266.09, 889,532.04 and 402,657.27 is: 555,945.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,266.09 : 889,532.04 = 402,657.27 : x
  2. Step 2: Convert to fraction form
    644,266.09/889,532.04 = 402,657.27/x
  3. Step 3: Cross multiply
    644,266.09x = 889,532.04 × 402,657.27
  4. Step 4: Simplify right side
    644,266.09x = 358,176,542,803.93
  5. Step 5: Solve for x
    x = 358,176,542,803.93/644,266.09
  6. Step 6: Final answer
    x = 555,945.05

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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.