Home / 420,017.40-574,986.80-417,015.72

Finding the Fourth Proportional to 420,017.40, 574,986.80 and 417,015.72

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Solution

The fourth proportional to 420,017.40, 574,986.80 and 417,015.72 is: 570,877.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,017.40 : 574,986.80 = 417,015.72 : x
  2. Step 2: Convert to fraction form
    420,017.40/574,986.80 = 417,015.72/x
  3. Step 3: Cross multiply
    420,017.40x = 574,986.80 × 417,015.72
  4. Step 4: Simplify right side
    420,017.40x = 239,778,534,392.50
  5. Step 5: Solve for x
    x = 239,778,534,392.50/420,017.40
  6. Step 6: Final answer
    x = 570,877.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.