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Finding the Fourth Proportional to 847,812.80, 1,271,330.40 and 374,254.40

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Solution

The fourth proportional to 847,812.80, 1,271,330.40 and 374,254.40 is: 561,209.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,812.80 : 1,271,330.40 = 374,254.40 : x
  2. Step 2: Convert to fraction form
    847,812.80/1,271,330.40 = 374,254.40/x
  3. Step 3: Cross multiply
    847,812.80x = 1,271,330.40 × 374,254.40
  4. Step 4: Simplify right side
    847,812.80x = 475,800,996,053.76
  5. Step 5: Solve for x
    x = 475,800,996,053.76/847,812.80
  6. Step 6: Final answer
    x = 561,209.97

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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.