Home / 790,875.47-1,091,406.48-428,298.21

Finding the Fourth Proportional to 790,875.47, 1,091,406.48 and 428,298.21

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Solution

The fourth proportional to 790,875.47, 1,091,406.48 and 428,298.21 is: 591,050.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,875.47 : 1,091,406.48 = 428,298.21 : x
  2. Step 2: Convert to fraction form
    790,875.47/1,091,406.48 = 428,298.21/x
  3. Step 3: Cross multiply
    790,875.47x = 1,091,406.48 × 428,298.21
  4. Step 4: Simplify right side
    790,875.47x = 467,447,441,766.40
  5. Step 5: Solve for x
    x = 467,447,441,766.40/790,875.47
  6. Step 6: Final answer
    x = 591,050.63

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1.5x scale

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.