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Finding the Fourth Proportional to 432,005.80, 605,430.20 and 432,005.80

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Solution

The fourth proportional to 432,005.80, 605,430.20 and 432,005.80 is: 605,430.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,005.80 : 605,430.20 = 432,005.80 : x
  2. Step 2: Convert to fraction form
    432,005.80/605,430.20 = 432,005.80/x
  3. Step 3: Cross multiply
    432,005.80x = 605,430.20 × 432,005.80
  4. Step 4: Simplify right side
    432,005.80x = 261,549,357,895.16
  5. Step 5: Solve for x
    x = 261,549,357,895.16/432,005.80
  6. Step 6: Final answer
    x = 605,430.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.