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Finding the Fourth Proportional to 515,784.60, 773,676.90 and 507,911.40

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Solution

The fourth proportional to 515,784.60, 773,676.90 and 507,911.40 is: 761,867.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,784.60 : 773,676.90 = 507,911.40 : x
  2. Step 2: Convert to fraction form
    515,784.60/773,676.90 = 507,911.40/x
  3. Step 3: Cross multiply
    515,784.60x = 773,676.90 × 507,911.40
  4. Step 4: Simplify right side
    515,784.60x = 392,959,317,426.66
  5. Step 5: Solve for x
    x = 392,959,317,426.66/515,784.60
  6. Step 6: Final answer
    x = 761,867.10

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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.