Home / 787,477.20-1,181,215.80-486,983.40

Finding the Fourth Proportional to 787,477.20, 1,181,215.80 and 486,983.40

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Solution

The fourth proportional to 787,477.20, 1,181,215.80 and 486,983.40 is: 730,475.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,477.20 : 1,181,215.80 = 486,983.40 : x
  2. Step 2: Convert to fraction form
    787,477.20/1,181,215.80 = 486,983.40/x
  3. Step 3: Cross multiply
    787,477.20x = 1,181,215.80 × 486,983.40
  4. Step 4: Simplify right side
    787,477.20x = 575,232,486,417.72
  5. Step 5: Solve for x
    x = 575,232,486,417.72/787,477.20
  6. Step 6: Final answer
    x = 730,475.10

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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.