Home / 786,686.40-1,180,612.80-520,358.40

Finding the Fourth Proportional to 786,686.40, 1,180,612.80 and 520,358.40

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Solution

The fourth proportional to 786,686.40, 1,180,612.80 and 520,358.40 is: 780,923.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,686.40 : 1,180,612.80 = 520,358.40 : x
  2. Step 2: Convert to fraction form
    786,686.40/1,180,612.80 = 520,358.40/x
  3. Step 3: Cross multiply
    786,686.40x = 1,180,612.80 × 520,358.40
  4. Step 4: Simplify right side
    786,686.40x = 614,341,787,627.52
  5. Step 5: Solve for x
    x = 614,341,787,627.52/786,686.40
  6. Step 6: Final answer
    x = 780,923.36

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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.