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Finding the Fourth Proportional to 851,863.80, 1,276,710.28 and 452,695.80

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Solution

The fourth proportional to 851,863.80, 1,276,710.28 and 452,695.80 is: 678,466.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,863.80 : 1,276,710.28 = 452,695.80 : x
  2. Step 2: Convert to fraction form
    851,863.80/1,276,710.28 = 452,695.80/x
  3. Step 3: Cross multiply
    851,863.80x = 1,276,710.28 × 452,695.80
  4. Step 4: Simplify right side
    851,863.80x = 577,961,381,572.82
  5. Step 5: Solve for x
    x = 577,961,381,572.82/851,863.80
  6. Step 6: Final answer
    x = 678,466.89

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1.5x scale

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.