Home / 910,390.80-1,365,586.20-279,303.60

Finding the Fourth Proportional to 910,390.80, 1,365,586.20 and 279,303.60

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Solution

The fourth proportional to 910,390.80, 1,365,586.20 and 279,303.60 is: 418,955.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,390.80 : 1,365,586.20 = 279,303.60 : x
  2. Step 2: Convert to fraction form
    910,390.80/1,365,586.20 = 279,303.60/x
  3. Step 3: Cross multiply
    910,390.80x = 1,365,586.20 × 279,303.60
  4. Step 4: Simplify right side
    910,390.80x = 381,413,141,770.32
  5. Step 5: Solve for x
    x = 381,413,141,770.32/910,390.80
  6. Step 6: Final answer
    x = 418,955.40

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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.