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Finding the Fourth Proportional to 558,973.80, 838,460.70 and 509,110.20

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Solution

The fourth proportional to 558,973.80, 838,460.70 and 509,110.20 is: 763,665.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,973.80 : 838,460.70 = 509,110.20 : x
  2. Step 2: Convert to fraction form
    558,973.80/838,460.70 = 509,110.20/x
  3. Step 3: Cross multiply
    558,973.80x = 838,460.70 × 509,110.20
  4. Step 4: Simplify right side
    558,973.80x = 426,868,894,669.14
  5. Step 5: Solve for x
    x = 426,868,894,669.14/558,973.80
  6. Step 6: Final answer
    x = 763,665.30

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Double scale
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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.