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Finding the Fourth Proportional to 611,579.10, 917,368.65 and 564,339.90

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Solution

The fourth proportional to 611,579.10, 917,368.65 and 564,339.90 is: 846,509.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,579.10 : 917,368.65 = 564,339.90 : x
  2. Step 2: Convert to fraction form
    611,579.10/917,368.65 = 564,339.90/x
  3. Step 3: Cross multiply
    611,579.10x = 917,368.65 × 564,339.90
  4. Step 4: Simplify right side
    611,579.10x = 517,707,732,204.14
  5. Step 5: Solve for x
    x = 517,707,732,204.14/611,579.10
  6. Step 6: Final answer
    x = 846,509.85

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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.