Home / 787,282.80-1,180,117.80-387,308.40

Finding the Fourth Proportional to 787,282.80, 1,180,117.80 and 387,308.40

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Solution

The fourth proportional to 787,282.80, 1,180,117.80 and 387,308.40 is: 580,565.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,282.80 : 1,180,117.80 = 387,308.40 : x
  2. Step 2: Convert to fraction form
    787,282.80/1,180,117.80 = 387,308.40/x
  3. Step 3: Cross multiply
    787,282.80x = 1,180,117.80 × 387,308.40
  4. Step 4: Simplify right side
    787,282.80x = 457,069,536,929.52
  5. Step 5: Solve for x
    x = 457,069,536,929.52/787,282.80
  6. Step 6: Final answer
    x = 580,565.89

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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.