Home / 696,525.05-961,215.57-390,669.45

Finding the Fourth Proportional to 696,525.05, 961,215.57 and 390,669.45

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Solution

The fourth proportional to 696,525.05, 961,215.57 and 390,669.45 is: 539,130.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,525.05 : 961,215.57 = 390,669.45 : x
  2. Step 2: Convert to fraction form
    696,525.05/961,215.57 = 390,669.45/x
  3. Step 3: Cross multiply
    696,525.05x = 961,215.57 × 390,669.45
  4. Step 4: Simplify right side
    696,525.05x = 375,517,558,063.34
  5. Step 5: Solve for x
    x = 375,517,558,063.34/696,525.05
  6. Step 6: Final answer
    x = 539,130.02

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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.