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Finding the Fourth Proportional to 607,821.40, 910,419.90 and 529,089.40

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Solution

The fourth proportional to 607,821.40, 910,419.90 and 529,089.40 is: 792,491.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,821.40 : 910,419.90 = 529,089.40 : x
  2. Step 2: Convert to fraction form
    607,821.40/910,419.90 = 529,089.40/x
  3. Step 3: Cross multiply
    607,821.40x = 910,419.90 × 529,089.40
  4. Step 4: Simplify right side
    607,821.40x = 481,693,518,639.06
  5. Step 5: Solve for x
    x = 481,693,518,639.06/607,821.40
  6. Step 6: Final answer
    x = 792,491.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.