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Finding the Fourth Proportional to 472,392,509.70, 708,588,764.55 and 300,063,908.10

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Solution

The fourth proportional to 472,392,509.70, 708,588,764.55 and 300,063,908.10 is: 450,095,862.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,392,509.70 : 708,588,764.55 = 300,063,908.10 : x
  2. Step 2: Convert to fraction form
    472,392,509.70/708,588,764.55 = 300,063,908.10/x
  3. Step 3: Cross multiply
    472,392,509.70x = 708,588,764.55 × 300,063,908.10
  4. Step 4: Simplify right side
    472,392,509.70x = 212,621,913,926,623,744
  5. Step 5: Solve for x
    x = 212,621,913,926,623,744/472,392,509.70
  6. Step 6: Final answer
    x = 450,095,862.15

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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.