Home / 876,871.60-1,315,307.40-404,479.60

Finding the Fourth Proportional to 876,871.60, 1,315,307.40 and 404,479.60

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Solution

The fourth proportional to 876,871.60, 1,315,307.40 and 404,479.60 is: 606,719.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,871.60 : 1,315,307.40 = 404,479.60 : x
  2. Step 2: Convert to fraction form
    876,871.60/1,315,307.40 = 404,479.60/x
  3. Step 3: Cross multiply
    876,871.60x = 1,315,307.40 × 404,479.60
  4. Step 4: Simplify right side
    876,871.60x = 532,015,011,029.04
  5. Step 5: Solve for x
    x = 532,015,011,029.04/876,871.60
  6. Step 6: Final answer
    x = 606,719.40

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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.