Home / 520,129,801.47-780,075,313.38-310,099,916.94

Finding the Fourth Proportional to 520,129,801.47, 780,075,313.38 and 310,099,916.94

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Solution

The fourth proportional to 520,129,801.47, 780,075,313.38 and 310,099,916.94 is: 465,078,696.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,129,801.47 : 780,075,313.38 = 310,099,916.94 : x
  2. Step 2: Convert to fraction form
    520,129,801.47/780,075,313.38 = 310,099,916.94/x
  3. Step 3: Cross multiply
    520,129,801.47x = 780,075,313.38 × 310,099,916.94
  4. Step 4: Simplify right side
    520,129,801.47x = 241,901,289,886,082,464
  5. Step 5: Solve for x
    x = 241,901,289,886,082,464/520,129,801.47
  6. Step 6: Final answer
    x = 465,078,696.13

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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.