Home / 896,123.20-1,344,422.40-390,467.20

Finding the Fourth Proportional to 896,123.20, 1,344,422.40 and 390,467.20

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Solution

The fourth proportional to 896,123.20, 1,344,422.40 and 390,467.20 is: 585,804.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    896,123.20 : 1,344,422.40 = 390,467.20 : x
  2. Step 2: Convert to fraction form
    896,123.20/1,344,422.40 = 390,467.20/x
  3. Step 3: Cross multiply
    896,123.20x = 1,344,422.40 × 390,467.20
  4. Step 4: Simplify right side
    896,123.20x = 524,952,850,145.28
  5. Step 5: Solve for x
    x = 524,952,850,145.28/896,123.20
  6. Step 6: Final answer
    x = 585,804.33

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1.5x scale

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.