Home / 528,350,983.25-729,133,138.25-290,218,186.53

Finding the Fourth Proportional to 528,350,983.25, 729,133,138.25 and 290,218,186.53

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Solution

The fourth proportional to 528,350,983.25, 729,133,138.25 and 290,218,186.53 is: 400,505,920.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,350,983.25 : 729,133,138.25 = 290,218,186.53 : x
  2. Step 2: Convert to fraction form
    528,350,983.25/729,133,138.25 = 290,218,186.53/x
  3. Step 3: Cross multiply
    528,350,983.25x = 729,133,138.25 × 290,218,186.53
  4. Step 4: Simplify right side
    528,350,983.25x = 211,607,697,121,842,752
  5. Step 5: Solve for x
    x = 211,607,697,121,842,752/528,350,983.25
  6. Step 6: Final answer
    x = 400,505,920.93

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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.