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Finding the Fourth Proportional to 707,248.78, 976,137.85 and 401,353.66

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Solution

The fourth proportional to 707,248.78, 976,137.85 and 401,353.66 is: 553,944.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,248.78 : 976,137.85 = 401,353.66 : x
  2. Step 2: Convert to fraction form
    707,248.78/976,137.85 = 401,353.66/x
  3. Step 3: Cross multiply
    707,248.78x = 976,137.85 × 401,353.66
  4. Step 4: Simplify right side
    707,248.78x = 391,776,498,762.03
  5. Step 5: Solve for x
    x = 391,776,498,762.03/707,248.78
  6. Step 6: Final answer
    x = 553,944.40

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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.