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Finding the Fourth Proportional to 707,688.91, 976,603.98 and 385,404.39

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Solution

The fourth proportional to 707,688.91, 976,603.98 and 385,404.39 is: 531,854.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,688.91 : 976,603.98 = 385,404.39 : x
  2. Step 2: Convert to fraction form
    707,688.91/976,603.98 = 385,404.39/x
  3. Step 3: Cross multiply
    707,688.91x = 976,603.98 × 385,404.39
  4. Step 4: Simplify right side
    707,688.91x = 376,387,461,183.47
  5. Step 5: Solve for x
    x = 376,387,461,183.47/707,688.91
  6. Step 6: Final answer
    x = 531,854.40

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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.