Home / 1,320,939.60-1,980,784.80-511,703.02

Finding the Fourth Proportional to 1,320,939.60, 1,980,784.80 and 511,703.02

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Solution

The fourth proportional to 1,320,939.60, 1,980,784.80 and 511,703.02 is: 767,312.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,939.60 : 1,980,784.80 = 511,703.02 : x
  2. Step 2: Convert to fraction form
    1,320,939.60/1,980,784.80 = 511,703.02/x
  3. Step 3: Cross multiply
    1,320,939.60x = 1,980,784.80 × 511,703.02
  4. Step 4: Simplify right side
    1,320,939.60x = 1,013,573,564,130.10
  5. Step 5: Solve for x
    x = 1,013,573,564,130.10/1,320,939.60
  6. Step 6: Final answer
    x = 767,312.57

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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.