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Finding the Fourth Proportional to 629,000.40, 868,011.98 and 357,065.92

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Solution

The fourth proportional to 629,000.40, 868,011.98 and 357,065.92 is: 492,746.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,000.40 : 868,011.98 = 357,065.92 : x
  2. Step 2: Convert to fraction form
    629,000.40/868,011.98 = 357,065.92/x
  3. Step 3: Cross multiply
    629,000.40x = 868,011.98 × 357,065.92
  4. Step 4: Simplify right side
    629,000.40x = 309,937,496,209.72
  5. Step 5: Solve for x
    x = 309,937,496,209.72/629,000.40
  6. Step 6: Final answer
    x = 492,746.10

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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.