Home / 678,829.10-1,017,368.85-520,271.60

Finding the Fourth Proportional to 678,829.10, 1,017,368.85 and 520,271.60

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Solution

The fourth proportional to 678,829.10, 1,017,368.85 and 520,271.60 is: 779,736.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,829.10 : 1,017,368.85 = 520,271.60 : x
  2. Step 2: Convert to fraction form
    678,829.10/1,017,368.85 = 520,271.60/x
  3. Step 3: Cross multiply
    678,829.10x = 1,017,368.85 × 520,271.60
  4. Step 4: Simplify right side
    678,829.10x = 529,308,119,379.66
  5. Step 5: Solve for x
    x = 529,308,119,379.66/678,829.10
  6. Step 6: Final answer
    x = 779,736.93

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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.