Home / 1,312,128.64-1,810,729.20-739,353.28

Finding the Fourth Proportional to 1,312,128.64, 1,810,729.20 and 739,353.28

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Solution

The fourth proportional to 1,312,128.64, 1,810,729.20 and 739,353.28 is: 1,020,302.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,128.64 : 1,810,729.20 = 739,353.28 : x
  2. Step 2: Convert to fraction form
    1,312,128.64/1,810,729.20 = 739,353.28/x
  3. Step 3: Cross multiply
    1,312,128.64x = 1,810,729.20 × 739,353.28
  4. Step 4: Simplify right side
    1,312,128.64x = 1,338,768,573,211.78
  5. Step 5: Solve for x
    x = 1,338,768,573,211.78/1,312,128.64
  6. Step 6: Final answer
    x = 1,020,302.84

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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.