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Finding the Fourth Proportional to 521,503.60, 731,154.80 and 521,503.60

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Solution

The fourth proportional to 521,503.60, 731,154.80 and 521,503.60 is: 731,154.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,503.60 : 731,154.80 = 521,503.60 : x
  2. Step 2: Convert to fraction form
    521,503.60/731,154.80 = 521,503.60/x
  3. Step 3: Cross multiply
    521,503.60x = 731,154.80 × 521,503.60
  4. Step 4: Simplify right side
    521,503.60x = 381,299,860,357.28
  5. Step 5: Solve for x
    x = 381,299,860,357.28/521,503.60
  6. Step 6: Final answer
    x = 731,154.80

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Half scale
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Double scale
Find fourth proportional to 521,504.60, 731,156.20 and 521,504.60
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.