Home / 977,378.20-1,465,994.40-408,612.40

Finding the Fourth Proportional to 977,378.20, 1,465,994.40 and 408,612.40

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Solution

The fourth proportional to 977,378.20, 1,465,994.40 and 408,612.40 is: 612,888.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,378.20 : 1,465,994.40 = 408,612.40 : x
  2. Step 2: Convert to fraction form
    977,378.20/1,465,994.40 = 408,612.40/x
  3. Step 3: Cross multiply
    977,378.20x = 1,465,994.40 × 408,612.40
  4. Step 4: Simplify right side
    977,378.20x = 599,023,490,170.56
  5. Step 5: Solve for x
    x = 599,023,490,170.56/977,378.20
  6. Step 6: Final answer
    x = 612,888.12

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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.