Home / 521,520,771,981.60-782,281,157,972.40-506,827,491,213.60

Finding the Fourth Proportional to 521,520,771,981.60, 782,281,157,972.40 and 506,827,491,213.60

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Solution

The fourth proportional to 521,520,771,981.60, 782,281,157,972.40 and 506,827,491,213.60 is: 760,241,236,820.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,520,771,981.60 : 782,281,157,972.40 = 506,827,491,213.60 : x
  2. Step 2: Convert to fraction form
    521,520,771,981.60/782,281,157,972.40 = 506,827,491,213.60/x
  3. Step 3: Cross multiply
    521,520,771,981.60x = 782,281,157,972.40 × 506,827,491,213.60
  4. Step 4: Simplify right side
    521,520,771,981.60x = 396,481,596,718,821,421,350,912
  5. Step 5: Solve for x
    x = 396,481,596,718,821,421,350,912/521,520,771,981.60
  6. Step 6: Final answer
    x = 760,241,236,820.40

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Double scale
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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.