Home / 678,076.20-1,017,114.30-528,428.70

Finding the Fourth Proportional to 678,076.20, 1,017,114.30 and 528,428.70

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Solution

The fourth proportional to 678,076.20, 1,017,114.30 and 528,428.70 is: 792,643.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,076.20 : 1,017,114.30 = 528,428.70 : x
  2. Step 2: Convert to fraction form
    678,076.20/1,017,114.30 = 528,428.70/x
  3. Step 3: Cross multiply
    678,076.20x = 1,017,114.30 × 528,428.70
  4. Step 4: Simplify right side
    678,076.20x = 537,472,387,300.41
  5. Step 5: Solve for x
    x = 537,472,387,300.41/678,076.20
  6. Step 6: Final answer
    x = 792,643.05

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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.