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Finding the Fourth Proportional to 642,099.36, 886,106.34 and 370,162.20

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Solution

The fourth proportional to 642,099.36, 886,106.34 and 370,162.20 is: 510,829.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,099.36 : 886,106.34 = 370,162.20 : x
  2. Step 2: Convert to fraction form
    642,099.36/886,106.34 = 370,162.20/x
  3. Step 3: Cross multiply
    642,099.36x = 886,106.34 × 370,162.20
  4. Step 4: Simplify right side
    642,099.36x = 328,003,072,248.35
  5. Step 5: Solve for x
    x = 328,003,072,248.35/642,099.36
  6. Step 6: Final answer
    x = 510,829.15

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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.