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Finding the Fourth Proportional to 717,852.02, 990,568.10 and 423,455.85

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Solution

The fourth proportional to 717,852.02, 990,568.10 and 423,455.85 is: 584,329.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,852.02 : 990,568.10 = 423,455.85 : x
  2. Step 2: Convert to fraction form
    717,852.02/990,568.10 = 423,455.85/x
  3. Step 3: Cross multiply
    717,852.02x = 990,568.10 × 423,455.85
  4. Step 4: Simplify right side
    717,852.02x = 419,461,854,651.11
  5. Step 5: Solve for x
    x = 419,461,854,651.11/717,852.02
  6. Step 6: Final answer
    x = 584,329.15

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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.