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Finding the Fourth Proportional to 610,852.40, 918,246.90 and 434,580.20

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Solution

The fourth proportional to 610,852.40, 918,246.90 and 434,580.20 is: 653,270.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,852.40 : 918,246.90 = 434,580.20 : x
  2. Step 2: Convert to fraction form
    610,852.40/918,246.90 = 434,580.20/x
  3. Step 3: Cross multiply
    610,852.40x = 918,246.90 × 434,580.20
  4. Step 4: Simplify right side
    610,852.40x = 399,051,921,451.38
  5. Step 5: Solve for x
    x = 399,051,921,451.38/610,852.40
  6. Step 6: Final answer
    x = 653,270.61

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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.