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Finding the Fourth Proportional to 579,991.60, 869,987.40 and 403,044.40

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Solution

The fourth proportional to 579,991.60, 869,987.40 and 403,044.40 is: 604,566.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,991.60 : 869,987.40 = 403,044.40 : x
  2. Step 2: Convert to fraction form
    579,991.60/869,987.40 = 403,044.40/x
  3. Step 3: Cross multiply
    579,991.60x = 869,987.40 × 403,044.40
  4. Step 4: Simplify right side
    579,991.60x = 350,643,549,640.56
  5. Step 5: Solve for x
    x = 350,643,549,640.56/579,991.60
  6. Step 6: Final answer
    x = 604,566.60

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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.