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Finding the Fourth Proportional to 453,508.80, 626,705.28 and 340,134.72

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Solution

The fourth proportional to 453,508.80, 626,705.28 and 340,134.72 is: 470,033.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,508.80 : 626,705.28 = 340,134.72 : x
  2. Step 2: Convert to fraction form
    453,508.80/626,705.28 = 340,134.72/x
  3. Step 3: Cross multiply
    453,508.80x = 626,705.28 × 340,134.72
  4. Step 4: Simplify right side
    453,508.80x = 213,164,224,935.32
  5. Step 5: Solve for x
    x = 213,164,224,935.32/453,508.80
  6. Step 6: Final answer
    x = 470,033.27

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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.