Home / 648,076,965.39-972,117,970.14-156,789,446.80

Finding the Fourth Proportional to 648,076,965.39, 972,117,970.14 and 156,789,446.80

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Solution

The fourth proportional to 648,076,965.39, 972,117,970.14 and 156,789,446.80 is: 235,184,780.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,076,965.39 : 972,117,970.14 = 156,789,446.80 : x
  2. Step 2: Convert to fraction form
    648,076,965.39/972,117,970.14 = 156,789,446.80/x
  3. Step 3: Cross multiply
    648,076,965.39x = 972,117,970.14 × 156,789,446.80
  4. Step 4: Simplify right side
    648,076,965.39x = 152,417,838,762,589,536
  5. Step 5: Solve for x
    x = 152,417,838,762,589,536/648,076,965.39
  6. Step 6: Final answer
    x = 235,184,780.36

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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.