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Finding the Fourth Proportional to 608,886.80, 840,262.60 and 340,614.80

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Solution

The fourth proportional to 608,886.80, 840,262.60 and 340,614.80 is: 470,047.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,886.80 : 840,262.60 = 340,614.80 : x
  2. Step 2: Convert to fraction form
    608,886.80/840,262.60 = 340,614.80/x
  3. Step 3: Cross multiply
    608,886.80x = 840,262.60 × 340,614.80
  4. Step 4: Simplify right side
    608,886.80x = 286,205,877,446.48
  5. Step 5: Solve for x
    x = 286,205,877,446.48/608,886.80
  6. Step 6: Final answer
    x = 470,047.76

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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.