Home / 679,938.80-1,019,033.40-413,416.40

Finding the Fourth Proportional to 679,938.80, 1,019,033.40 and 413,416.40

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Solution

The fourth proportional to 679,938.80, 1,019,033.40 and 413,416.40 is: 619,592.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,938.80 : 1,019,033.40 = 413,416.40 : x
  2. Step 2: Convert to fraction form
    679,938.80/1,019,033.40 = 413,416.40/x
  3. Step 3: Cross multiply
    679,938.80x = 1,019,033.40 × 413,416.40
  4. Step 4: Simplify right side
    679,938.80x = 421,285,119,707.76
  5. Step 5: Solve for x
    x = 421,285,119,707.76/679,938.80
  6. Step 6: Final answer
    x = 619,592.70

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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.