Home / 679,931.80-1,019,022.90-413,409.40

Finding the Fourth Proportional to 679,931.80, 1,019,022.90 and 413,409.40

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Solution

The fourth proportional to 679,931.80, 1,019,022.90 and 413,409.40 is: 619,582.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,931.80 : 1,019,022.90 = 413,409.40 : x
  2. Step 2: Convert to fraction form
    679,931.80/1,019,022.90 = 413,409.40/x
  3. Step 3: Cross multiply
    679,931.80x = 1,019,022.90 × 413,409.40
  4. Step 4: Simplify right side
    679,931.80x = 421,273,645,675.26
  5. Step 5: Solve for x
    x = 421,273,645,675.26/679,931.80
  6. Step 6: Final answer
    x = 619,582.21

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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.