Home / 783,084.90-1,080,400.13-438,870.50

Finding the Fourth Proportional to 783,084.90, 1,080,400.13 and 438,870.50

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Solution

The fourth proportional to 783,084.90, 1,080,400.13 and 438,870.50 is: 605,497.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,084.90 : 1,080,400.13 = 438,870.50 : x
  2. Step 2: Convert to fraction form
    783,084.90/1,080,400.13 = 438,870.50/x
  3. Step 3: Cross multiply
    783,084.90x = 1,080,400.13 × 438,870.50
  4. Step 4: Simplify right side
    783,084.90x = 474,155,745,253.17
  5. Step 5: Solve for x
    x = 474,155,745,253.17/783,084.90
  6. Step 6: Final answer
    x = 605,497.24

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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.