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Finding the Fourth Proportional to 913,328.70, 1,280,759.70 and 913,328.70

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Solution

The fourth proportional to 913,328.70, 1,280,759.70 and 913,328.70 is: 1,280,759.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,328.70 : 1,280,759.70 = 913,328.70 : x
  2. Step 2: Convert to fraction form
    913,328.70/1,280,759.70 = 913,328.70/x
  3. Step 3: Cross multiply
    913,328.70x = 1,280,759.70 × 913,328.70
  4. Step 4: Simplify right side
    913,328.70x = 1,169,754,591,813.39
  5. Step 5: Solve for x
    x = 1,169,754,591,813.39/913,328.70
  6. Step 6: Final answer
    x = 1,280,759.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.