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Finding the Fourth Proportional to 520,063.40, 779,864.70 and 239,666.60

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Solution

The fourth proportional to 520,063.40, 779,864.70 and 239,666.60 is: 359,393.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,063.40 : 779,864.70 = 239,666.60 : x
  2. Step 2: Convert to fraction form
    520,063.40/779,864.70 = 239,666.60/x
  3. Step 3: Cross multiply
    520,063.40x = 779,864.70 × 239,666.60
  4. Step 4: Simplify right side
    520,063.40x = 186,907,521,109.02
  5. Step 5: Solve for x
    x = 186,907,521,109.02/520,063.40
  6. Step 6: Final answer
    x = 359,393.72

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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.