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Finding the Fourth Proportional to 472,393,039.80, 708,589,559.70 and 239,940,746.40

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Solution

The fourth proportional to 472,393,039.80, 708,589,559.70 and 239,940,746.40 is: 359,911,119.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,393,039.80 : 708,589,559.70 = 239,940,746.40 : x
  2. Step 2: Convert to fraction form
    472,393,039.80/708,589,559.70 = 239,940,746.40/x
  3. Step 3: Cross multiply
    472,393,039.80x = 708,589,559.70 × 239,940,746.40
  4. Step 4: Simplify right side
    472,393,039.80x = 170,019,507,845,665,376
  5. Step 5: Solve for x
    x = 170,019,507,845,665,376/472,393,039.80
  6. Step 6: Final answer
    x = 359,911,119.60

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1.5x scale

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.