Home / 528,984.40-730,221.91-357,135.11

Finding the Fourth Proportional to 528,984.40, 730,221.91 and 357,135.11

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Solution

The fourth proportional to 528,984.40, 730,221.91 and 357,135.11 is: 492,997.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,984.40 : 730,221.91 = 357,135.11 : x
  2. Step 2: Convert to fraction form
    528,984.40/730,221.91 = 357,135.11/x
  3. Step 3: Cross multiply
    528,984.40x = 730,221.91 × 357,135.11
  4. Step 4: Simplify right side
    528,984.40x = 260,787,881,351.09
  5. Step 5: Solve for x
    x = 260,787,881,351.09/528,984.40
  6. Step 6: Final answer
    x = 492,997.30

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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.