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Finding the Fourth Proportional to 525,404.10, 724,484.30 and 355,342.98

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Solution

The fourth proportional to 525,404.10, 724,484.30 and 355,342.98 is: 489,985.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,404.10 : 724,484.30 = 355,342.98 : x
  2. Step 2: Convert to fraction form
    525,404.10/724,484.30 = 355,342.98/x
  3. Step 3: Cross multiply
    525,404.10x = 724,484.30 × 355,342.98
  4. Step 4: Simplify right side
    525,404.10x = 257,440,410,125.21
  5. Step 5: Solve for x
    x = 257,440,410,125.21/525,404.10
  6. Step 6: Final answer
    x = 489,985.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.