Home / 672,681.40-1,008,519.90-406,385.80

Finding the Fourth Proportional to 672,681.40, 1,008,519.90 and 406,385.80

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Solution

The fourth proportional to 672,681.40, 1,008,519.90 and 406,385.80 is: 609,275.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,681.40 : 1,008,519.90 = 406,385.80 : x
  2. Step 2: Convert to fraction form
    672,681.40/1,008,519.90 = 406,385.80/x
  3. Step 3: Cross multiply
    672,681.40x = 1,008,519.90 × 406,385.80
  4. Step 4: Simplify right side
    672,681.40x = 409,848,166,377.42
  5. Step 5: Solve for x
    x = 409,848,166,377.42/672,681.40
  6. Step 6: Final answer
    x = 609,275.31

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Double scale
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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.