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Finding the Fourth Proportional to 641,670,962.68, 962,392,668.30 and 291,835,088.35

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Solution

The fourth proportional to 641,670,962.68, 962,392,668.30 and 291,835,088.35 is: 437,700,886.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,670,962.68 : 962,392,668.30 = 291,835,088.35 : x
  2. Step 2: Convert to fraction form
    641,670,962.68/962,392,668.30 = 291,835,088.35/x
  3. Step 3: Cross multiply
    641,670,962.68x = 962,392,668.30 × 291,835,088.35
  4. Step 4: Simplify right side
    641,670,962.68x = 280,859,949,380,722,752
  5. Step 5: Solve for x
    x = 280,859,949,380,722,752/641,670,962.68
  6. Step 6: Final answer
    x = 437,700,886.77

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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.