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Finding the Fourth Proportional to 620,999.10, 931,498.65 and 432,042.30

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Solution

The fourth proportional to 620,999.10, 931,498.65 and 432,042.30 is: 648,063.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,999.10 : 931,498.65 = 432,042.30 : x
  2. Step 2: Convert to fraction form
    620,999.10/931,498.65 = 432,042.30/x
  3. Step 3: Cross multiply
    620,999.10x = 931,498.65 × 432,042.30
  4. Step 4: Simplify right side
    620,999.10x = 402,446,819,192.90
  5. Step 5: Solve for x
    x = 402,446,819,192.90/620,999.10
  6. Step 6: Final answer
    x = 648,063.45

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Similar ratio
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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.