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Finding the Fourth Proportional to 717,451.43, 990,152.91 and 535,848.21

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Solution

The fourth proportional to 717,451.43, 990,152.91 and 535,848.21 is: 739,522.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,451.43 : 990,152.91 = 535,848.21 : x
  2. Step 2: Convert to fraction form
    717,451.43/990,152.91 = 535,848.21/x
  3. Step 3: Cross multiply
    717,451.43x = 990,152.91 × 535,848.21
  4. Step 4: Simplify right side
    717,451.43x = 530,571,664,449.79
  5. Step 5: Solve for x
    x = 530,571,664,449.79/717,451.43
  6. Step 6: Final answer
    x = 739,522.77

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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.