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Finding the Fourth Proportional to 634,740.60, 890,998.80 and 634,740.60

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Solution

The fourth proportional to 634,740.60, 890,998.80 and 634,740.60 is: 890,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,740.60 : 890,998.80 = 634,740.60 : x
  2. Step 2: Convert to fraction form
    634,740.60/890,998.80 = 634,740.60/x
  3. Step 3: Cross multiply
    634,740.60x = 890,998.80 × 634,740.60
  4. Step 4: Simplify right side
    634,740.60x = 565,553,112,911.28
  5. Step 5: Solve for x
    x = 565,553,112,911.28/634,740.60
  6. Step 6: Final answer
    x = 890,998.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.