Home / 680,921.70-1,021,382.55-539,916.90

Finding the Fourth Proportional to 680,921.70, 1,021,382.55 and 539,916.90

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Solution

The fourth proportional to 680,921.70, 1,021,382.55 and 539,916.90 is: 809,875.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,921.70 : 1,021,382.55 = 539,916.90 : x
  2. Step 2: Convert to fraction form
    680,921.70/1,021,382.55 = 539,916.90/x
  3. Step 3: Cross multiply
    680,921.70x = 1,021,382.55 × 539,916.90
  4. Step 4: Simplify right side
    680,921.70x = 551,461,700,110.10
  5. Step 5: Solve for x
    x = 551,461,700,110.10/680,921.70
  6. Step 6: Final answer
    x = 809,875.35

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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.