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Finding the Fourth Proportional to 611,741.10, 917,611.65 and 564,501.90

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Solution

The fourth proportional to 611,741.10, 917,611.65 and 564,501.90 is: 846,752.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,741.10 : 917,611.65 = 564,501.90 : x
  2. Step 2: Convert to fraction form
    611,741.10/917,611.65 = 564,501.90/x
  3. Step 3: Cross multiply
    611,741.10x = 917,611.65 × 564,501.90
  4. Step 4: Simplify right side
    611,741.10x = 517,993,519,887.14
  5. Step 5: Solve for x
    x = 517,993,519,887.14/611,741.10
  6. Step 6: Final answer
    x = 846,752.85

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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.