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Finding the Fourth Proportional to 539,047,812.78, 743,886,477.65 and 291,529,167.03

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Solution

The fourth proportional to 539,047,812.78, 743,886,477.65 and 291,529,167.03 is: 402,310,518.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,047,812.78 : 743,886,477.65 = 291,529,167.03 : x
  2. Step 2: Convert to fraction form
    539,047,812.78/743,886,477.65 = 291,529,167.03/x
  3. Step 3: Cross multiply
    539,047,812.78x = 743,886,477.65 × 291,529,167.03
  4. Step 4: Simplify right side
    539,047,812.78x = 216,864,605,194,185,184
  5. Step 5: Solve for x
    x = 216,864,605,194,185,184/539,047,812.78
  6. Step 6: Final answer
    x = 402,310,518.76

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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.