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Finding the Fourth Proportional to 493,392.80, 740,434.80 and 316,330.40

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Solution

The fourth proportional to 493,392.80, 740,434.80 and 316,330.40 is: 474,717.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,392.80 : 740,434.80 = 316,330.40 : x
  2. Step 2: Convert to fraction form
    493,392.80/740,434.80 = 316,330.40/x
  3. Step 3: Cross multiply
    493,392.80x = 740,434.80 × 316,330.40
  4. Step 4: Simplify right side
    493,392.80x = 234,222,036,457.92
  5. Step 5: Solve for x
    x = 234,222,036,457.92/493,392.80
  6. Step 6: Final answer
    x = 474,717.18

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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.