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Finding the Fourth Proportional to 610,521.95, 842,572.05 and 338,677.42

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Solution

The fourth proportional to 610,521.95, 842,572.05 and 338,677.42 is: 467,403.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,521.95 : 842,572.05 = 338,677.42 : x
  2. Step 2: Convert to fraction form
    610,521.95/842,572.05 = 338,677.42/x
  3. Step 3: Cross multiply
    610,521.95x = 842,572.05 × 338,677.42
  4. Step 4: Simplify right side
    610,521.95x = 285,360,128,058.11
  5. Step 5: Solve for x
    x = 285,360,128,058.11/610,521.95
  6. Step 6: Final answer
    x = 467,403.55

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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.