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Finding the Fourth Proportional to 684,307.80, 1,026,461.70 and 310,330.80

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Solution

The fourth proportional to 684,307.80, 1,026,461.70 and 310,330.80 is: 465,496.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,307.80 : 1,026,461.70 = 310,330.80 : x
  2. Step 2: Convert to fraction form
    684,307.80/1,026,461.70 = 310,330.80/x
  3. Step 3: Cross multiply
    684,307.80x = 1,026,461.70 × 310,330.80
  4. Step 4: Simplify right side
    684,307.80x = 318,542,680,530.36
  5. Step 5: Solve for x
    x = 318,542,680,530.36/684,307.80
  6. Step 6: Final answer
    x = 465,496.20

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Double scale
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Similar ratio
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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.