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Finding the Fourth Proportional to 697,219.32, 962,150.70 and 391,302.84

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Solution

The fourth proportional to 697,219.32, 962,150.70 and 391,302.84 is: 539,991.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,219.32 : 962,150.70 = 391,302.84 : x
  2. Step 2: Convert to fraction form
    697,219.32/962,150.70 = 391,302.84/x
  3. Step 3: Cross multiply
    697,219.32x = 962,150.70 × 391,302.84
  4. Step 4: Simplify right side
    697,219.32x = 376,492,301,417.99
  5. Step 5: Solve for x
    x = 376,492,301,417.99/697,219.32
  6. Step 6: Final answer
    x = 539,991.21

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Double scale
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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.