Home / 528,359.28-729,418.68-407,235.12

Finding the Fourth Proportional to 528,359.28, 729,418.68 and 407,235.12

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Solution

The fourth proportional to 528,359.28, 729,418.68 and 407,235.12 is: 562,202.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,359.28 : 729,418.68 = 407,235.12 : x
  2. Step 2: Convert to fraction form
    528,359.28/729,418.68 = 407,235.12/x
  3. Step 3: Cross multiply
    528,359.28x = 729,418.68 × 407,235.12
  4. Step 4: Simplify right side
    528,359.28x = 297,044,903,680.04
  5. Step 5: Solve for x
    x = 297,044,903,680.04/528,359.28
  6. Step 6: Final answer
    x = 562,202.49

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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.