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Finding the Fourth Proportional to 719,316.92, 993,030.38 and 525,507

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Solution

The fourth proportional to 719,316.92, 993,030.38 and 525,507 is: 725,472.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,316.92 : 993,030.38 = 525,507 : x
  2. Step 2: Convert to fraction form
    719,316.92/993,030.38 = 525,507/x
  3. Step 3: Cross multiply
    719,316.92x = 993,030.38 × 525,507
  4. Step 4: Simplify right side
    719,316.92x = 521,844,415,902.66
  5. Step 5: Solve for x
    x = 521,844,415,902.66/719,316.92
  6. Step 6: Final answer
    x = 725,472.18

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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.