Home / 986,970.30-1,478,487.15-687,788.70

Finding the Fourth Proportional to 986,970.30, 1,478,487.15 and 687,788.70

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Solution

The fourth proportional to 986,970.30, 1,478,487.15 and 687,788.70 is: 1,030,311.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,970.30 : 1,478,487.15 = 687,788.70 : x
  2. Step 2: Convert to fraction form
    986,970.30/1,478,487.15 = 687,788.70/x
  3. Step 3: Cross multiply
    986,970.30x = 1,478,487.15 × 687,788.70
  4. Step 4: Simplify right side
    986,970.30x = 1,016,886,754,865.20
  5. Step 5: Solve for x
    x = 1,016,886,754,865.20/986,970.30
  6. Step 6: Final answer
    x = 1,030,311.40

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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.