Home / 690,785.60-1,036,178.40-410,158.40

Finding the Fourth Proportional to 690,785.60, 1,036,178.40 and 410,158.40

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Solution

The fourth proportional to 690,785.60, 1,036,178.40 and 410,158.40 is: 615,237.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,785.60 : 1,036,178.40 = 410,158.40 : x
  2. Step 2: Convert to fraction form
    690,785.60/1,036,178.40 = 410,158.40/x
  3. Step 3: Cross multiply
    690,785.60x = 1,036,178.40 × 410,158.40
  4. Step 4: Simplify right side
    690,785.60x = 424,997,274,658.56
  5. Step 5: Solve for x
    x = 424,997,274,658.56/690,785.60
  6. Step 6: Final answer
    x = 615,237.60

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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.