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Finding the Fourth Proportional to 688,619,400.90, 966,107,894.70 and 688,619,400.90

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Solution

The fourth proportional to 688,619,400.90, 966,107,894.70 and 688,619,400.90 is: 966,107,894.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,619,400.90 : 966,107,894.70 = 688,619,400.90 : x
  2. Step 2: Convert to fraction form
    688,619,400.90/966,107,894.70 = 688,619,400.90/x
  3. Step 3: Cross multiply
    688,619,400.90x = 966,107,894.70 × 688,619,400.90
  4. Step 4: Simplify right side
    688,619,400.90x = 665,280,639,653,074,304
  5. Step 5: Solve for x
    x = 665,280,639,653,074,304/688,619,400.90
  6. Step 6: Final answer
    x = 966,107,894.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.