Home / 779,248.80-1,168,911.60-406,000.80

Finding the Fourth Proportional to 779,248.80, 1,168,911.60 and 406,000.80

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Solution

The fourth proportional to 779,248.80, 1,168,911.60 and 406,000.80 is: 609,021.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,248.80 : 1,168,911.60 = 406,000.80 : x
  2. Step 2: Convert to fraction form
    779,248.80/1,168,911.60 = 406,000.80/x
  3. Step 3: Cross multiply
    779,248.80x = 1,168,911.60 × 406,000.80
  4. Step 4: Simplify right side
    779,248.80x = 474,579,044,729.28
  5. Step 5: Solve for x
    x = 474,579,044,729.28/779,248.80
  6. Step 6: Final answer
    x = 609,021.21

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Double scale
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Similar ratio
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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.