Home / 520,284.20-779,907.90-239,311.40

Finding the Fourth Proportional to 520,284.20, 779,907.90 and 239,311.40

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Solution

The fourth proportional to 520,284.20, 779,907.90 and 239,311.40 is: 358,728.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,284.20 : 779,907.90 = 239,311.40 : x
  2. Step 2: Convert to fraction form
    520,284.20/779,907.90 = 239,311.40/x
  3. Step 3: Cross multiply
    520,284.20x = 779,907.90 × 239,311.40
  4. Step 4: Simplify right side
    520,284.20x = 186,640,851,420.06
  5. Step 5: Solve for x
    x = 186,640,851,420.06/520,284.20
  6. Step 6: Final answer
    x = 358,728.66

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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.