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Finding the Fourth Proportional to 520,031.90, 779,817.45 and 239,635.10

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Solution

The fourth proportional to 520,031.90, 779,817.45 and 239,635.10 is: 359,346.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,031.90 : 779,817.45 = 239,635.10 : x
  2. Step 2: Convert to fraction form
    520,031.90/779,817.45 = 239,635.10/x
  3. Step 3: Cross multiply
    520,031.90x = 779,817.45 × 239,635.10
  4. Step 4: Simplify right side
    520,031.90x = 186,871,632,612.50
  5. Step 5: Solve for x
    x = 186,871,632,612.50/520,031.90
  6. Step 6: Final answer
    x = 359,346.48

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Double scale
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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.