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Finding the Fourth Proportional to 826,670.40, 1,239,422.40 and 377,606.40

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Solution

The fourth proportional to 826,670.40, 1,239,422.40 and 377,606.40 is: 566,143.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,670.40 : 1,239,422.40 = 377,606.40 : x
  2. Step 2: Convert to fraction form
    826,670.40/1,239,422.40 = 377,606.40/x
  3. Step 3: Cross multiply
    826,670.40x = 1,239,422.40 × 377,606.40
  4. Step 4: Simplify right side
    826,670.40x = 468,013,830,543.36
  5. Step 5: Solve for x
    x = 468,013,830,543.36/826,670.40
  6. Step 6: Final answer
    x = 566,143.21

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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.