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Finding the Fourth Proportional to 610,360.91, 915,354.35 and 422,031.50

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Solution

The fourth proportional to 610,360.91, 915,354.35 and 422,031.50 is: 632,917.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,360.91 : 915,354.35 = 422,031.50 : x
  2. Step 2: Convert to fraction form
    610,360.91/915,354.35 = 422,031.50/x
  3. Step 3: Cross multiply
    610,360.91x = 915,354.35 × 422,031.50
  4. Step 4: Simplify right side
    610,360.91x = 386,308,369,362.03
  5. Step 5: Solve for x
    x = 386,308,369,362.03/610,360.91
  6. Step 6: Final answer
    x = 632,917.94

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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.