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Finding the Fourth Proportional to 851,875.80, 1,276,728.30 and 452,707.80

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Solution

The fourth proportional to 851,875.80, 1,276,728.30 and 452,707.80 is: 678,484.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,875.80 : 1,276,728.30 = 452,707.80 : x
  2. Step 2: Convert to fraction form
    851,875.80/1,276,728.30 = 452,707.80/x
  3. Step 3: Cross multiply
    851,875.80x = 1,276,728.30 × 452,707.80
  4. Step 4: Simplify right side
    851,875.80x = 577,984,859,890.74
  5. Step 5: Solve for x
    x = 577,984,859,890.74/851,875.80
  6. Step 6: Final answer
    x = 678,484.89

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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.