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Finding the Fourth Proportional to 610,719.40, 916,079.10 and 512,741.80

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Solution

The fourth proportional to 610,719.40, 916,079.10 and 512,741.80 is: 769,112.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,719.40 : 916,079.10 = 512,741.80 : x
  2. Step 2: Convert to fraction form
    610,719.40/916,079.10 = 512,741.80/x
  3. Step 3: Cross multiply
    610,719.40x = 916,079.10 × 512,741.80
  4. Step 4: Simplify right side
    610,719.40x = 469,712,046,676.38
  5. Step 5: Solve for x
    x = 469,712,046,676.38/610,719.40
  6. Step 6: Final answer
    x = 769,112.70

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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.