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Finding the Fourth Proportional to 432,004.55, 605,428.45 and 432,004.55

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Solution

The fourth proportional to 432,004.55, 605,428.45 and 432,004.55 is: 605,428.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,004.55 : 605,428.45 = 432,004.55 : x
  2. Step 2: Convert to fraction form
    432,004.55/605,428.45 = 432,004.55/x
  3. Step 3: Cross multiply
    432,004.55x = 605,428.45 × 432,004.55
  4. Step 4: Simplify right side
    432,004.55x = 261,547,845,099.45
  5. Step 5: Solve for x
    x = 261,547,845,099.45/432,004.55
  6. Step 6: Final answer
    x = 605,428.45

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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.