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Finding the Fourth Proportional to 706,378.68, 974,788.79 and 384,085.89

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Solution

The fourth proportional to 706,378.68, 974,788.79 and 384,085.89 is: 530,031.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,378.68 : 974,788.79 = 384,085.89 : x
  2. Step 2: Convert to fraction form
    706,378.68/974,788.79 = 384,085.89/x
  3. Step 3: Cross multiply
    706,378.68x = 974,788.79 × 384,085.89
  4. Step 4: Simplify right side
    706,378.68x = 374,402,618,048.74
  5. Step 5: Solve for x
    x = 374,402,618,048.74/706,378.68
  6. Step 6: Final answer
    x = 530,031.03

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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.