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Finding the Fourth Proportional to 867,969.80, 1,301,004.30 and 306,715.40

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Solution

The fourth proportional to 867,969.80, 1,301,004.30 and 306,715.40 is: 459,737.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,969.80 : 1,301,004.30 = 306,715.40 : x
  2. Step 2: Convert to fraction form
    867,969.80/1,301,004.30 = 306,715.40/x
  3. Step 3: Cross multiply
    867,969.80x = 1,301,004.30 × 306,715.40
  4. Step 4: Simplify right side
    867,969.80x = 399,038,054,276.22
  5. Step 5: Solve for x
    x = 399,038,054,276.22/867,969.80
  6. Step 6: Final answer
    x = 459,737.26

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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.