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Finding the Fourth Proportional to 662,015.80, 991,055.40 and 662,015.80

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Solution

The fourth proportional to 662,015.80, 991,055.40 and 662,015.80 is: 991,055.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,015.80 : 991,055.40 = 662,015.80 : x
  2. Step 2: Convert to fraction form
    662,015.80/991,055.40 = 662,015.80/x
  3. Step 3: Cross multiply
    662,015.80x = 991,055.40 × 662,015.80
  4. Step 4: Simplify right side
    662,015.80x = 656,094,333,475.32
  5. Step 5: Solve for x
    x = 656,094,333,475.32/662,015.80
  6. Step 6: Final answer
    x = 991,055.40

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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.