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Finding the Fourth Proportional to 783,690.72, 1,080,492.02 and 507,560.71

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Solution

The fourth proportional to 783,690.72, 1,080,492.02 and 507,560.71 is: 699,785.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,690.72 : 1,080,492.02 = 507,560.71 : x
  2. Step 2: Convert to fraction form
    783,690.72/1,080,492.02 = 507,560.71/x
  3. Step 3: Cross multiply
    783,690.72x = 1,080,492.02 × 507,560.71
  4. Step 4: Simplify right side
    783,690.72x = 548,415,296,820.53
  5. Step 5: Solve for x
    x = 548,415,296,820.53/783,690.72
  6. Step 6: Final answer
    x = 699,785.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.