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Finding the Fourth Proportional to 525,018.92, 724,139.36 and 395,962.80

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Solution

The fourth proportional to 525,018.92, 724,139.36 and 395,962.80 is: 546,136.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,018.92 : 724,139.36 = 395,962.80 : x
  2. Step 2: Convert to fraction form
    525,018.92/724,139.36 = 395,962.80/x
  3. Step 3: Cross multiply
    525,018.92x = 724,139.36 × 395,962.80
  4. Step 4: Simplify right side
    525,018.92x = 286,732,248,575.81
  5. Step 5: Solve for x
    x = 286,732,248,575.81/525,018.92
  6. Step 6: Final answer
    x = 546,136.98

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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.