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Finding the Fourth Proportional to 1,342,703.10, 1,852,979.16 and 730,826.28

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Solution

The fourth proportional to 1,342,703.10, 1,852,979.16 and 730,826.28 is: 1,008,566.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,342,703.10 : 1,852,979.16 = 730,826.28 : x
  2. Step 2: Convert to fraction form
    1,342,703.10/1,852,979.16 = 730,826.28/x
  3. Step 3: Cross multiply
    1,342,703.10x = 1,852,979.16 × 730,826.28
  4. Step 4: Simplify right side
    1,342,703.10x = 1,354,205,866,420.32
  5. Step 5: Solve for x
    x = 1,354,205,866,420.32/1,342,703.10
  6. Step 6: Final answer
    x = 1,008,566.87

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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.