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Finding the Fourth Proportional to 472,492,811.20, 708,739,216.80 and 472,492,811.20

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Solution

The fourth proportional to 472,492,811.20, 708,739,216.80 and 472,492,811.20 is: 708,739,216.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,492,811.20 : 708,739,216.80 = 472,492,811.20 : x
  2. Step 2: Convert to fraction form
    472,492,811.20/708,739,216.80 = 472,492,811.20/x
  3. Step 3: Cross multiply
    472,492,811.20x = 708,739,216.80 × 472,492,811.20
  4. Step 4: Simplify right side
    472,492,811.20x = 334,874,184,953,518,208
  5. Step 5: Solve for x
    x = 334,874,184,953,518,208/472,492,811.20
  6. Step 6: Final answer
    x = 708,739,216.80

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