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Finding the Fourth Proportional to 680,701.20, 940,663.08 and 510,640.08

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Solution

The fourth proportional to 680,701.20, 940,663.08 and 510,640.08 is: 705,655.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,701.20 : 940,663.08 = 510,640.08 : x
  2. Step 2: Convert to fraction form
    680,701.20/940,663.08 = 510,640.08/x
  3. Step 3: Cross multiply
    680,701.20x = 940,663.08 × 510,640.08
  4. Step 4: Simplify right side
    680,701.20x = 480,340,270,424.25
  5. Step 5: Solve for x
    x = 480,340,270,424.25/680,701.20
  6. Step 6: Final answer
    x = 705,655.10

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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.