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Finding the Fourth Proportional to 525,239.68, 724,839.36 and 286,775.68

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Solution

The fourth proportional to 525,239.68, 724,839.36 and 286,775.68 is: 395,755.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,239.68 : 724,839.36 = 286,775.68 : x
  2. Step 2: Convert to fraction form
    525,239.68/724,839.36 = 286,775.68/x
  3. Step 3: Cross multiply
    525,239.68x = 724,839.36 × 286,775.68
  4. Step 4: Simplify right side
    525,239.68x = 207,866,300,354.77
  5. Step 5: Solve for x
    x = 207,866,300,354.77/525,239.68
  6. Step 6: Final answer
    x = 395,755.13

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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.