Home / 520,624,374.13-780,525,662.23-258,127,936.57

Finding the Fourth Proportional to 520,624,374.13, 780,525,662.23 and 258,127,936.57

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Solution

The fourth proportional to 520,624,374.13, 780,525,662.23 and 258,127,936.57 is: 386,988,179.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,624,374.13 : 780,525,662.23 = 258,127,936.57 : x
  2. Step 2: Convert to fraction form
    520,624,374.13/780,525,662.23 = 258,127,936.57/x
  3. Step 3: Cross multiply
    520,624,374.13x = 780,525,662.23 × 258,127,936.57
  4. Step 4: Simplify right side
    520,624,374.13x = 201,475,478,631,362,688
  5. Step 5: Solve for x
    x = 201,475,478,631,362,688/520,624,374.13
  6. Step 6: Final answer
    x = 386,988,179.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.