Home / 12,864,429,385.96-17,753,446,279.36-7,148,692,470.28

Finding the Fourth Proportional to 12,864,429,385.96, 17,753,446,279.36 and 7,148,692,470.28

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Solution

The fourth proportional to 12,864,429,385.96, 17,753,446,279.36 and 7,148,692,470.28 is: 9,865,492,197.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,864,429,385.96 : 17,753,446,279.36 = 7,148,692,470.28 : x
  2. Step 2: Convert to fraction form
    12,864,429,385.96/17,753,446,279.36 = 7,148,692,470.28/x
  3. Step 3: Cross multiply
    12,864,429,385.96x = 17,753,446,279.36 × 7,148,692,470.28
  4. Step 4: Simplify right side
    12,864,429,385.96x = 126,913,927,738,781,319,168
  5. Step 5: Solve for x
    x = 126,913,927,738,781,319,168/12,864,429,385.96
  6. Step 6: Final answer
    x = 9,865,492,197.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.