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Finding the Fourth Proportional to 611,703.60, 917,555.40 and 162,493.80

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Solution

The fourth proportional to 611,703.60, 917,555.40 and 162,493.80 is: 243,740.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,703.60 : 917,555.40 = 162,493.80 : x
  2. Step 2: Convert to fraction form
    611,703.60/917,555.40 = 162,493.80/x
  3. Step 3: Cross multiply
    611,703.60x = 917,555.40 × 162,493.80
  4. Step 4: Simplify right side
    611,703.60x = 149,097,063,656.52
  5. Step 5: Solve for x
    x = 149,097,063,656.52/611,703.60
  6. Step 6: Final answer
    x = 243,740.70

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Similar ratio
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1.5x scale

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.