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Finding the Fourth Proportional to 664,315.20, 996,472.80 and 606,254.40

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Solution

The fourth proportional to 664,315.20, 996,472.80 and 606,254.40 is: 909,381.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,315.20 : 996,472.80 = 606,254.40 : x
  2. Step 2: Convert to fraction form
    664,315.20/996,472.80 = 606,254.40/x
  3. Step 3: Cross multiply
    664,315.20x = 996,472.80 × 606,254.40
  4. Step 4: Simplify right side
    664,315.20x = 604,116,019,480.32
  5. Step 5: Solve for x
    x = 604,116,019,480.32/664,315.20
  6. Step 6: Final answer
    x = 909,381.60

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Double scale
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Similar ratio
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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.