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Finding the Fourth Proportional to 805,258, 1,208,280.64 and 570,111.76

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Solution

The fourth proportional to 805,258, 1,208,280.64 and 570,111.76 is: 855,446.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,258 : 1,208,280.64 = 570,111.76 : x
  2. Step 2: Convert to fraction form
    805,258/1,208,280.64 = 570,111.76/x
  3. Step 3: Cross multiply
    805,258x = 1,208,280.64 × 570,111.76
  4. Step 4: Simplify right side
    805,258x = 688,855,002,244.33
  5. Step 5: Solve for x
    x = 688,855,002,244.33/805,258
  6. Step 6: Final answer
    x = 855,446.33

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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.