Home / 520,138,032.30-780,207,048.45-472,520,918.70

Finding the Fourth Proportional to 520,138,032.30, 780,207,048.45 and 472,520,918.70

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Solution

The fourth proportional to 520,138,032.30, 780,207,048.45 and 472,520,918.70 is: 708,781,378.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,138,032.30 : 780,207,048.45 = 472,520,918.70 : x
  2. Step 2: Convert to fraction form
    520,138,032.30/780,207,048.45 = 472,520,918.70/x
  3. Step 3: Cross multiply
    520,138,032.30x = 780,207,048.45 × 472,520,918.70
  4. Step 4: Simplify right side
    520,138,032.30x = 368,664,151,309,809,408
  5. Step 5: Solve for x
    x = 368,664,151,309,809,408/520,138,032.30
  6. Step 6: Final answer
    x = 708,781,378.05

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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.