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Finding the Fourth Proportional to 696,144.48, 960,463.64 and 390,178.46

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Solution

The fourth proportional to 696,144.48, 960,463.64 and 390,178.46 is: 538,325.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,144.48 : 960,463.64 = 390,178.46 : x
  2. Step 2: Convert to fraction form
    696,144.48/960,463.64 = 390,178.46/x
  3. Step 3: Cross multiply
    696,144.48x = 960,463.64 × 390,178.46
  4. Step 4: Simplify right side
    696,144.48x = 374,752,223,941.19
  5. Step 5: Solve for x
    x = 374,752,223,941.19/696,144.48
  6. Step 6: Final answer
    x = 538,325.35

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Similar ratio
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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.