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Finding the Fourth Proportional to 502,130.70, 692,945.76 and 275,776.20

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Solution

The fourth proportional to 502,130.70, 692,945.76 and 275,776.20 is: 380,574.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,130.70 : 692,945.76 = 275,776.20 : x
  2. Step 2: Convert to fraction form
    502,130.70/692,945.76 = 275,776.20/x
  3. Step 3: Cross multiply
    502,130.70x = 692,945.76 × 275,776.20
  4. Step 4: Simplify right side
    502,130.70x = 191,097,948,498.91
  5. Step 5: Solve for x
    x = 191,097,948,498.91/502,130.70
  6. Step 6: Final answer
    x = 380,574.12

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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.