Home / 1,289,541.24-1,779,047.28-779,357.88

Finding the Fourth Proportional to 1,289,541.24, 1,779,047.28 and 779,357.88

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Solution

The fourth proportional to 1,289,541.24, 1,779,047.28 and 779,357.88 is: 1,075,199.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,541.24 : 1,779,047.28 = 779,357.88 : x
  2. Step 2: Convert to fraction form
    1,289,541.24/1,779,047.28 = 779,357.88/x
  3. Step 3: Cross multiply
    1,289,541.24x = 1,779,047.28 × 779,357.88
  4. Step 4: Simplify right side
    1,289,541.24x = 1,386,514,516,560.57
  5. Step 5: Solve for x
    x = 1,386,514,516,560.57/1,289,541.24
  6. Step 6: Final answer
    x = 1,075,199.83

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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.