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Finding the Fourth Proportional to 525,011.93, 724,129.71 and 395,955.80

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Solution

The fourth proportional to 525,011.93, 724,129.71 and 395,955.80 is: 546,127.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,011.93 : 724,129.71 = 395,955.80 : x
  2. Step 2: Convert to fraction form
    525,011.93/724,129.71 = 395,955.80/x
  3. Step 3: Cross multiply
    525,011.93x = 724,129.71 × 395,955.80
  4. Step 4: Simplify right side
    525,011.93x = 286,723,358,626.82
  5. Step 5: Solve for x
    x = 286,723,358,626.82/525,011.93
  6. Step 6: Final answer
    x = 546,127.32

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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.