Home / 847,327.80-1,270,343.70-426,905.40

Finding the Fourth Proportional to 847,327.80, 1,270,343.70 and 426,905.40

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Solution

The fourth proportional to 847,327.80, 1,270,343.70 and 426,905.40 is: 640,031.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,327.80 : 1,270,343.70 = 426,905.40 : x
  2. Step 2: Convert to fraction form
    847,327.80/1,270,343.70 = 426,905.40/x
  3. Step 3: Cross multiply
    847,327.80x = 1,270,343.70 × 426,905.40
  4. Step 4: Simplify right side
    847,327.80x = 542,316,585,385.98
  5. Step 5: Solve for x
    x = 542,316,585,385.98/847,327.80
  6. Step 6: Final answer
    x = 640,031.62

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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.