Home / 418,555.12-623,889.76-384,962.80

Finding the Fourth Proportional to 418,555.12, 623,889.76 and 384,962.80

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Solution

The fourth proportional to 418,555.12, 623,889.76 and 384,962.80 is: 573,817.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,555.12 : 623,889.76 = 384,962.80 : x
  2. Step 2: Convert to fraction form
    418,555.12/623,889.76 = 384,962.80/x
  3. Step 3: Cross multiply
    418,555.12x = 623,889.76 × 384,962.80
  4. Step 4: Simplify right side
    418,555.12x = 240,174,348,900.93
  5. Step 5: Solve for x
    x = 240,174,348,900.93/418,555.12
  6. Step 6: Final answer
    x = 573,817.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.