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Finding the Fourth Proportional to 525,404.34, 724,484.66 and 355,343.22

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Solution

The fourth proportional to 525,404.34, 724,484.66 and 355,343.22 is: 489,985.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,404.34 : 724,484.66 = 355,343.22 : x
  2. Step 2: Convert to fraction form
    525,404.34/724,484.66 = 355,343.22/x
  3. Step 3: Cross multiply
    525,404.34x = 724,484.66 × 355,343.22
  4. Step 4: Simplify right side
    525,404.34x = 257,440,710,148.29
  5. Step 5: Solve for x
    x = 257,440,710,148.29/525,404.34
  6. Step 6: Final answer
    x = 489,985.88

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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.