Home / 670,420.48-1,005,779.04-221,280.16

Finding the Fourth Proportional to 670,420.48, 1,005,779.04 and 221,280.16

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Solution

The fourth proportional to 670,420.48, 1,005,779.04 and 221,280.16 is: 331,969.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,420.48 : 1,005,779.04 = 221,280.16 : x
  2. Step 2: Convert to fraction form
    670,420.48/1,005,779.04 = 221,280.16/x
  3. Step 3: Cross multiply
    670,420.48x = 1,005,779.04 × 221,280.16
  4. Step 4: Simplify right side
    670,420.48x = 222,558,946,895.85
  5. Step 5: Solve for x
    x = 222,558,946,895.85/670,420.48
  6. Step 6: Final answer
    x = 331,969.19

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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.