Home / 912,430.20-1,369,422.90-407,767.80

Finding the Fourth Proportional to 912,430.20, 1,369,422.90 and 407,767.80

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Solution

The fourth proportional to 912,430.20, 1,369,422.90 and 407,767.80 is: 611,999.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,430.20 : 1,369,422.90 = 407,767.80 : x
  2. Step 2: Convert to fraction form
    912,430.20/1,369,422.90 = 407,767.80/x
  3. Step 3: Cross multiply
    912,430.20x = 1,369,422.90 × 407,767.80
  4. Step 4: Simplify right side
    912,430.20x = 558,406,563,202.62
  5. Step 5: Solve for x
    x = 558,406,563,202.62/912,430.20
  6. Step 6: Final answer
    x = 611,999.21

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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.