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Finding the Fourth Proportional to 1,343,582.64, 1,854,059.76 and 739,970.64

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Solution

The fourth proportional to 1,343,582.64, 1,854,059.76 and 739,970.64 is: 1,021,113.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,343,582.64 : 1,854,059.76 = 739,970.64 : x
  2. Step 2: Convert to fraction form
    1,343,582.64/1,854,059.76 = 739,970.64/x
  3. Step 3: Cross multiply
    1,343,582.64x = 1,854,059.76 × 739,970.64
  4. Step 4: Simplify right side
    1,343,582.64x = 1,371,949,787,205.45
  5. Step 5: Solve for x
    x = 1,371,949,787,205.45/1,343,582.64
  6. Step 6: Final answer
    x = 1,021,113.06

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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.