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Finding the Fourth Proportional to 646,643.08, 893,238.66 and 586,281.64

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Solution

The fourth proportional to 646,643.08, 893,238.66 and 586,281.64 is: 809,858.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,643.08 : 893,238.66 = 586,281.64 : x
  2. Step 2: Convert to fraction form
    646,643.08/893,238.66 = 586,281.64/x
  3. Step 3: Cross multiply
    646,643.08x = 893,238.66 × 586,281.64
  4. Step 4: Simplify right side
    646,643.08x = 523,689,426,496.20
  5. Step 5: Solve for x
    x = 523,689,426,496.20/646,643.08
  6. Step 6: Final answer
    x = 809,858.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.