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Finding the Fourth Proportional to 696,110.55, 960,676.96 and 390,187.01

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Solution

The fourth proportional to 696,110.55, 960,676.96 and 390,187.01 is: 538,482.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,110.55 : 960,676.96 = 390,187.01 : x
  2. Step 2: Convert to fraction form
    696,110.55/960,676.96 = 390,187.01/x
  3. Step 3: Cross multiply
    696,110.55x = 960,676.96 × 390,187.01
  4. Step 4: Simplify right side
    696,110.55x = 374,843,668,647.36
  5. Step 5: Solve for x
    x = 374,843,668,647.36/696,110.55
  6. Step 6: Final answer
    x = 538,482.96

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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.