Home / 678,557.40-1,016,280.90-663,005.40

Finding the Fourth Proportional to 678,557.40, 1,016,280.90 and 663,005.40

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Solution

The fourth proportional to 678,557.40, 1,016,280.90 and 663,005.40 is: 992,988.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,557.40 : 1,016,280.90 = 663,005.40 : x
  2. Step 2: Convert to fraction form
    678,557.40/1,016,280.90 = 663,005.40/x
  3. Step 3: Cross multiply
    678,557.40x = 1,016,280.90 × 663,005.40
  4. Step 4: Simplify right side
    678,557.40x = 673,799,724,616.86
  5. Step 5: Solve for x
    x = 673,799,724,616.86/678,557.40
  6. Step 6: Final answer
    x = 992,988.54

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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.