Home / 528,973,744.25-729,984,234.14-290,822,980.87

Finding the Fourth Proportional to 528,973,744.25, 729,984,234.14 and 290,822,980.87

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Solution

The fourth proportional to 528,973,744.25, 729,984,234.14 and 290,822,980.87 is: 401,335,970.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,973,744.25 : 729,984,234.14 = 290,822,980.87 : x
  2. Step 2: Convert to fraction form
    528,973,744.25/729,984,234.14 = 290,822,980.87/x
  3. Step 3: Cross multiply
    528,973,744.25x = 729,984,234.14 × 290,822,980.87
  4. Step 4: Simplify right side
    528,973,744.25x = 212,296,190,961,247,744
  5. Step 5: Solve for x
    x = 212,296,190,961,247,744/528,973,744.25
  6. Step 6: Final answer
    x = 401,335,970.39

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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.