Home / 678,809.60-1,017,955.20-205,337.60

Finding the Fourth Proportional to 678,809.60, 1,017,955.20 and 205,337.60

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Solution

The fourth proportional to 678,809.60, 1,017,955.20 and 205,337.60 is: 307,927.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,809.60 : 1,017,955.20 = 205,337.60 : x
  2. Step 2: Convert to fraction form
    678,809.60/1,017,955.20 = 205,337.60/x
  3. Step 3: Cross multiply
    678,809.60x = 1,017,955.20 × 205,337.60
  4. Step 4: Simplify right side
    678,809.60x = 209,024,477,675.52
  5. Step 5: Solve for x
    x = 209,024,477,675.52/678,809.60
  6. Step 6: Final answer
    x = 307,927.99

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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.