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Finding the Fourth Proportional to 696,142.49, 960,460.88 and 390,176.46

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Solution

The fourth proportional to 696,142.49, 960,460.88 and 390,176.46 is: 538,322.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,142.49 : 960,460.88 = 390,176.46 : x
  2. Step 2: Convert to fraction form
    696,142.49/960,460.88 = 390,176.46/x
  3. Step 3: Cross multiply
    696,142.49x = 960,460.88 × 390,176.46
  4. Step 4: Simplify right side
    696,142.49x = 374,749,224,176.00
  5. Step 5: Solve for x
    x = 374,749,224,176.00/696,142.49
  6. Step 6: Final answer
    x = 538,322.59

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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.