Home / 787,564.80-1,180,540.80-387,590.40

Finding the Fourth Proportional to 787,564.80, 1,180,540.80 and 387,590.40

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Solution

The fourth proportional to 787,564.80, 1,180,540.80 and 387,590.40 is: 580,988.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,564.80 : 1,180,540.80 = 387,590.40 : x
  2. Step 2: Convert to fraction form
    787,564.80/1,180,540.80 = 387,590.40/x
  3. Step 3: Cross multiply
    787,564.80x = 1,180,540.80 × 387,590.40
  4. Step 4: Simplify right side
    787,564.80x = 457,566,280,888.32
  5. Step 5: Solve for x
    x = 457,566,280,888.32/787,564.80
  6. Step 6: Final answer
    x = 580,988.74

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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.