Home / 879,779.60-1,320,332.84-643,731.28

Finding the Fourth Proportional to 879,779.60, 1,320,332.84 and 643,731.28

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Solution

The fourth proportional to 879,779.60, 1,320,332.84 and 643,731.28 is: 966,082.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,779.60 : 1,320,332.84 = 643,731.28 : x
  2. Step 2: Convert to fraction form
    879,779.60/1,320,332.84 = 643,731.28/x
  3. Step 3: Cross multiply
    879,779.60x = 1,320,332.84 × 643,731.28
  4. Step 4: Simplify right side
    879,779.60x = 849,939,549,119.24
  5. Step 5: Solve for x
    x = 849,939,549,119.24/879,779.60
  6. Step 6: Final answer
    x = 966,082.36

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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.